Chess Opening Names

by Bill Wall

 

AASUM GAMBIT                                                            1.Nc3 d5 2.e4 dxe4 3.Bc4

ABBAZIA DEFENSE; SCANDINAVIAN V, KGA             1 e4 e5 2 f4 exf4 3 Nf3 d5

ABONYI GAMBIT; TENNISON G, LEMBERG G          1 Nf3 d5 2 e4

ABRAHAMS V; NOTEBOOM V; KLAUS JUNGE V      1 d4 d5 2 c4 e6 3 Nc3 c6 4 Nf3 dxc4 5 a4 Bb4 6 e3 b5 7 Bd2 a5

ACCELERATED DRAGON; FIANCHETTO V, SIC         1 e5 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 g6

ACCELERATED FIANCHETTO, QGA                             1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 e6 5 Bxc4 c5 6 O-O a6 7 Qe2 b5

ACCELERATED MERAN, QGD                                      1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 a6

ACCELERATED NAJDORF; POLUGAEVSKY, SIC         1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nd4 Nf6 5 Nc3 a6 6 Bg5 e6 77 f4 b5

ACCELERATED WIMPY VARIATION, SICILIAN          1 e4 c5 2 Nf3 e6 3 d4 cxd4

ACTION EXTENSION VARIATION, SICILIAN              1 e4 c5 2 Nf3 g6 3 c4 Bh6

ADAM VARIATION, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 Qe2 Be7 10 c4

ADAMS ATTACK, SICILIAN                                           1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6 6 h3

ADAMS DEFENSE                                                           1 e4 Nh6

ADAMS GAMBIT, VIENNA                                            1 e4 e5 2 Nc3 Nf6 3 Bc4 Nxe4 4 Qh5 Nd6 5 Bb3 Nc6 6 d4

ADORJAN SYSTEM, ENGLISH                                       1 c4 g6 2 e4 e5

AGINCOURT D; KURAJICA D, ENGLISH                     1 c4 e6

ADVANCE V, CARO KANN                                            1 e4 c6 2 d4 d5 3 e5

ADVANCE V; NIMZOVICH V; STEINITZ, FR                1 e4 e6 2 d4 d5 3 e5

AHLHAUSEN OPENING; GROB                     1 g4

ALAPIN DEFENSE, RUY LOPEZ                      1 e4 e5 2 Nf3 Nc6 3 Bb5 Bb4

ALAPIN GAMBIT; WHITAKER G, FRENCH       1 e4 e6 2 d4 d5 3 Be3

ALAPIN OPENING                                           1 e4 e5 2 Ne2

ALAPIN V, DUTCH                         1 d4 f5 2 Qd3

ALAPIN V, FRENCH                                         1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7 7 Nb5

ALAPIN V, QGD                                               1 d4 d5 2 c4 e5 3 dxe5 d4 4 Nf3 Nc6 5 Nbd2

ALAPIN V, QGD                                1 d4 d5 2 c4 e6 3 Nc3 b6

ALAPIN V, RUY LOPEZ                                    1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 Bxc6+ dxc6 6 d4 f6

ALAPIN V, SIC; SVESHNIKOV V             1 e4 c5 2 c3

ALAPIN V, VIENNA                        1 e4 e5 2 Nc3 Nc6 3 f4

ALAPIN-DIEMER GAMBIT, FRENCH                           1 e4 e6 2 d4 d5 3 Be3 dxe4 4 f3

ALATORTSEV V, QGD; PETROSIAN V                         1 d4 d5 2 c4 e6 3 Nc3 Be7

ALBIN ATTACK; CHATARD-ALEKHINE ATTACK         1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 h4

ALBIN COUNTER-GAMBIT, QGD; CAVALOTTI         1 d4 d5 2 c4 e5

ALBIN-CHATARD ATTACK, FRENCH                           1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 h4

ALBRECHT DEFENSE, BDG                                           1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 g6

ALEKHINE ATTACK, FR  see ALBIN ATTACK   1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 h4

ALEKHINE DEFENSE                        1 e4 Nf6

ALEKHINE V, ALEKHINE                                 1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 Nf3 Bg4 5 c4

ALEKHINE V, DUTCH                                      1 d4 f5 2 c4 e6 3 g3 Nf6 4 Bg2 Be7 5 Nf3 O-O 6 O-O Ne4

ALEKHINE V, FRENCH                      1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 Ne2

ALEKHINE V, QGA                                           1 d4 d5 2 c4 dxc4 3 Nf3 a6 4 e3 Bg4

ALEKHINE V, QGD                                           1 d4 d5 2 c4 g6

ALEKHINE V, QGD                                           1 d4 d5 2 c4 dc 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 c6 8 Bd3 dc 9 Bc4 Nd5 10 Be7 Qe7 11 Ne4

ALEKHINE V, SICILIAN                                   1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 g6 6 Be2 Bg7 7 O-O O-O 8 Nb3 Nc6 9 Kh1

ALEKHINE V, SLAV                                          1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 e3 b5 6 a4 b4

ALEKSEEV VARIATION, NIMZOVICH DEFENSE         1 e4 Nc6 2 d4 d5 3 Nc3 e5

ALEPPO GAMBIT; QUEEN'S GAMBIT           1 d4 d5 2 c4

ALFRED LANGE G; LANGE GAMBIT                            1 d4 d5 2 e4 dxe4 3 Nc3 e5 4 Nxe4

ALLGAIER GAMBIT, KGA; COTTER GAMBIT     1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5

ALLGAIER-THOROLD G, KGA; THOROLD V               1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 d4

ALTHOUSE; STILETTO VARIATION, SICILIAN           1 e4 c5 2 Nf3 Qa5

AMAR GAMBIT; PARIS GAMBIT               1 Nh3 d5 2 g3 e5 3 f4 Bxh3 4 Bxh3 exf4 5 O-O

AMAR OPENING; PARIS OPENING             1 Nh3

AMAZON                                                                         1 d4 d5 2 Qd3

AMAZON                                                                         1 Nc3 d5 2 e4 dxe4 3 Nxe4 Qd5

AMERICAN ATTACK, SICILIAN                      1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nc6 5 Nc3 Nf6 6 Ndb5 Bb4 7 Nd6+

AMSTERDAM ATTACK                                    1 e3 e5 2 c4 d6 3 Nc3 Nc6 4 b3 Nf6

AMSTERDAM V, SICILIAN                                            1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 g6 6 Be3 Bg7 7 Be2 Nc6 8 Qd2

AMSTERDAM V, SLAV                                    1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 e3 Bf5 5 cxd5 cxd5 6 Nc3

ANDERSSEN ATTACK, FRENCH                    1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 Bxf6

ANDERSSEN C-A, KGA                                    1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 Nh6 7 d4 d6

ANDERSSEN C-A, SCOTCH; PAULSEN V     1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bc4 Bc5 5 O-O d6 6 c3 Bg4

ANDERSSEN GAMBIT                                     1 e4 e5 2 Nc3 f5

ANDERSSEN OPENING                                                 1 a3

ANDERSSEN V, CENTER COUNTER                            1 e4 d5 2 exd5 Qxd5 3 Nc3 Qa5 4 d4 e5

ANDERSSEN V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 d3

ANDERSSEN V, SIC; COUNTERATTACK V  1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nf6

ANDERSSPIKE                                                  1 a3 g6 2 g4

ANGLO-DUTCH                                               1 c4 e5 2 Nc3 f5

ANGLO-POLISH DUTCH                                 1 c4 f5 2 b4

ANGLO-SCANDANAVIAN                                             1 c4 g5

ANGLO-SLAV                                                   1 c4 c6

ANGLO-SYSTEM, ENGLISH                                           1 c4 Nf6

ANTAL DEFENSE, PIRC; UFIMTSEV           1 e4 d6 2 d4 Nf6 3 Nc3 g6

ANTI-GRUNFELD SYSTEM                                            1 d4 Nf6 2 c4 g6 3 f3

ANTI-KIESERITZKY SYSTEM, KGA; BECKER D            1 e4 e5 2 f4 exf4 3 Nf3 h6

ANTI-MARSHALL V, RUY LOPEZ                   1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 O-O 8 a4

ANTI-MERAN GAMBIT, QGD                                       1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 Bg5

ANTI-VERESOV                                                1 d4 d5 2 Nc3 Bg4

ANTOSHIN-HORT V, DUTCH                        1 d4 f5 2 g3 Nf6 3 Bg2 d6

ARGENTINE V, QGD                                       1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Nbd7 5 e3 c6 6 Nf3 Qa5 7 Nd2 Bb4 8 Qc2 O-O 9 Bh4

ARGENTINE V, SIC, NAJDORF; GOTEBORG V   1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6 6 Bg5 e6 7 f4 Be7 8 Qf3 h6 9 Bh4 g5 

ARKANGELSK V; COUNTERTHRUST, RUY                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O b5

ARONIN-TAIMANOV V, KID                          1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Be2 e5 7 O-O Nc6

ARSENIEV V, RUY LOPEZ                               1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Nb8 10 d4 Nbd7 11 c4

ASYMMETRICAL V, ENGLISH                        1 c4 c5 2 Nc3 Nf6 3 Nf3 d5 4 cxd5 Nxd5

ATKINSON V, CC                                             1 e4 d5 2 exd5 c6 3 dxc6 e5

AUSTRIAN ATTACK; YUGOSLAV D, PIRC    1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 f4 Bg7 5 Nf3

AUSTRIAN D, QGD; SYMMETRICAL D                        1 d4 d5 2 c4 c5

AVERBAKH V, KID                                           1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Be2 O-O 6 Bg5

BAARN V, SLAV                                                              1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 Nh4

BABY ORANG-UTAN; LARSEN'S OPENING       1 b3

BAGUIO V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Ne4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Bc5 10 Nbd2 O-O 11 Bc2 Bf5

BAKER D; ST GEORGE O; BIRMINGHAM D               1 e4 a6

BALOGH DEFENSE                                                         1 e4 d6 2 d4 f5

BALOGH D, DUTCH                                        1 d4 f5 2 e4 d6

BALOGH G, BUDAPEST; TARTAKOWER C-G             1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 e4 d6

BALTIC DEFENSE, QP                      1.d4 d5 2.Nf3 Bf5

BARCZA OPENING, RETI                                 1 Nf3 d5 2 g3

BARCZA V, DUTCH                            1 d4 f5 2 Nf3 Nf6 3 c3

BARCZAY,BENKO,BILEK;HUNGARIAN A;   1 g3 (King's Fianchetto)

BARENDREGT-FISCHER V, RUY LOPEZ                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Bxc6 dxc6 5 O-O

BARMINA G, BUDAPEST DEFENSE                             1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 e4 Nxe5 5 f4 Bc5

BARNES D, RUY; FIANCHETTO; SMYSLOV S    1 e4 e5 2 Nf3 Nc6 3 Bb5 g6

BARNES DEFENSE                                                          1 e4 f6

BARNES O; GEDULT-GUNDERAM SYSTEM        1 f3

BASMAN DEFENSE; MACHO GROB; BORG O           1 e4 g5 (BASMANIAC)

BASMAN V, DUTCH                                        1 d4 f5 2 g3 g6 3 Bg2 Bg7 4 Nf3 c6 5 O-O Nh6

BASQUE G, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 d4 exd4 7 e5 Ne4 8 c3

BASQUE OPENING                                                        1 d4 Nf6 2 b3

BASTRIKOV V, SIC; TAIMANOV V                               1 e4 c5 2 Nf3 e6 3 d4 cd 4 Nxd4 Nc6 5 Nc3 Qc7

BATTAMBANG                                                 1 Nc3, 2 a3

BAYONET ATTACK, ITAL                                               1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Nf6 5 d4 ed 6 cd Bb4+ 7 Nc3 Ne4 8 O-O Bc3 9 d5 Bf6 10 Re1 Ne7 11 Re4 d6 12 g4

BECKER D; FRERE V; KATILIMOV                 1 e4 e6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Qd5

BECKER DEFENSE, ANTI-KIESERITSKY        1 e4 e5 2 f4 exf4 3 Nf3 h6

BEEFEATER                                                      1 c4 g6 2 Nc3 Bg7 3 d4 c5 4 d5 Bxc3 5 bxc3 f5

BEEN & KOOMEN; DUTCH & PERUVIAN V, QGD  1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 c5

BEHTING GAMBIT; ENGLUND GAMBIT                    1 d4 e5

BELGRADE GAMBIT, 4 KNIGHTS DEFENSE               1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 d4 exd4 5 Nd5

BELLON GAMBIT, ENGLISH                          1 c4 e5 2 Nc3 Nf6 3 Nf3 e4 4 Ng5 b5                                                                                                  

BENELUX V, RUY LOPEZ                                1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5 4 c3 Nf6 5 d4 Bb6 6 O-O O-O                                                           

BENIMA DEFENSE, SCOTCH                         1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bc4 Be7

BENKO; OPOCENSKY ; VOLGA G; VAITONIS G         1 d4 Nf6 2 c4 c5 3 d5 b5

BENKO O, BILEK, BARCZAY, HUNGARIAN A,   1 g3

BENONI DEFENSE; STAUNTON D; BENONI C-G      1 d4 c5

BENONI GAMBIT                                                           1 d4 c5 2 dxc5 b6

BENONI REVERSED, WING BLUMENFELD               1 Nf3 d5 2 c4 d4                 

BERG V, QID                                                    1 d4 Nf6 2 Nf3 b6 3 g3 Bb7 4 Bg2 c5 5 c4 cxd4 6 Qxd4

BERGER V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 a4 Nxd4 9 Nxd4 exd4 10 Nc3

BERGER V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 f5 4 Nc3

BERLIN D, BISHOP'S OPENING              1 e4 e5 2 Bc4 Nf6

BERLIN D, KGA                                                1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Nf6

BERLIN D, RUY LOPEZ                                   1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6

BERLIN V, RUY LOPEZ                                    3 Bb5 Nf6 4 O-O Ne4 5 d4 Be7 6 Qe2 Nd6 7 Bc6 bc 8 de Nb7 9 Nc3 O-O 10 Re1 Nc5 11 Nd4 Ne6 12 Be3 Nd4 13 Bd4 c5

BERLIN V, RUY LOPEZ                                    3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Nc5

BERLINER V, 2 KNIGHTS                                1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5 Nd4 6 c3 b5 7 Bf1 Nxd5 8 Ne4 Qh4

BERNSTEIN V, 4 KNIGHTS                                            1 e4 e5 2 Nf3 Nc6 3 Bb5 Bb4 5 O-O O-O 6 d3 d6 7 Bg5 Bxc3 8 bxc3 Ne7

BERTIN G, KGA; 3 PAWNS GAMBIT                            1 e4 e5 2 f4 exf4 3 Nf3 Be7 4 Bc4 Bh4+ 5 g3

BETBEDER; VERESOV; LEVITZKY; PARISIAN   1 d4 d5 2 c4 dc 3 e4 f5

BEVERWIJK V, RUY LOPEZ                                           1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O Bc5

BILGUER-MIRAGE VARIATION, KGA                          1 e4 e5 2 f4 exf4 3 Qe2

BILLIUM ATTACK; KERES V, SICILIAN         1 e4 c5 2 Ne2

BIRD ATTACK, ITALIAN                    1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Nf6 5 b4

BIRD D, RUY LOPEZ                       1 e4 e5 2 Nf3 Nc6 3 Bb5 Nd4

BIRD OPENING; DUTCH ATTACK                                1 f4

BIRD V, SICILIAN                                             1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 e5 6 Ndb5 d6 7 Bg5 a6 8 Na3 Be6

BIRD'S INVITATION, FRENCH                       1 e4 e6 2 Bb5

BIRMINGHAM D; BAKER D; ST GEORGE O               1 e4 a6

BIRMINGHAM GAMBIT                                 1 b4 c5

BISHOP D, QP                                                  1 d4 d5 2 Nf3 Nf6 3 e3 Bf5

BISHOP V, VIENNA                                         1 e4 e5 2 Nc3, 3 Bc4 Bc5

BISHOP'S G, KGA; KING'S BISHOP'S G      1 e4 e5 2 f4 exf4 3 Bc4

BISHOP'S OPENING                                        1 e4 e5 2 Bc4

BLACKBURNE ATTACK, 4 KNIGHTS                            1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4 5 O-O O-O 6 Nd5 Bc5 7 d4

BLACKBURNE ATTACK, SCOTCH                  1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Be3 Qf6 6 c3 Nge7 7 Qd2

BLACKBURNE GAMBIT                                  1 e4 d5 2 exd5 c6

BLACKBURNE V, DUTCH                                              1 d4 f5 2 g3 Nf6 3 Bg2 e6 4 Nh3

BLACKBURNE'S MOVE, QGA                        1 d4 d5 2 c4 dxc4 3 Nf3

BLACKMAR GAMBIT                                       1 d4 d5 2 e4 dxe4 3 f3

BLACKMAR-DIEMER GAMBIT                                     1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3

BLADEL V, DUTCH                                          1 d4 f5 2 c4 g6 3 Nc3 Nh6

BLED V, ENGLISH                                                           1 c4 c6 2 Nf3 d5 3 b3 Nf6 4 g3 g6

BLEDOW V, KGA; BLEDOW C-G; MORPHY D           1 e4 e5 2 f4 exf4 3 Bc4 d5

BLOCKADE V, BENONI; SEMI-BENONI       1 d4 c5 2 d5 e5 3 e4 d6

BLOODGOOD GAMBIT                                  1 Nf3 d5 2 b3 c5 3 e4 dxe4 4 Ne5

BLUMENFELD COUNTER GAMBIT                             1 d4 Nf6 2 c4 e6 3 Nf3 c5 4 d5 b5

BLUMENFELD V                                              1 d4 Nf6 2 c4 e6 3 Nf3 c5

BLUMENFELD V, QGD                                   1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 a6 9 e4 c5 10 e5 cd 11 Nxb5

BLUMENFELD V, SCOTCH                                            1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Be3 Qf6 6 Nb5

BODEN V, PHILIDOR                                      1 e4 e5 2 Nf3 d6 3 d4 exd4 4 Qxd4 Bd7

BODEN V, RUY LOPEZ                                    1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5 4 c3 Qe7

BODEN-KIESERITZKY GAMBIT, PETROV     1 e4 e5 2 Nf3 Nf6 3 Bc4 Nxe4 4 Nc3

BOEHNKE G, CENTER COUNTER                 1 e4 d5 2 exd5 e5

BOGOLJUBOV DEFENSE; BOGOJUBOV INDIAN      1 d4 Nf6 2 c4 e6 3 Nf3 Bb4+

BOGOLJUBOV O; MIKENAS-VAN GEET D  1 d4 Nc6

BOGOLJUBOV V, 4 KTS DEFENSE                1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 d4

BOGOLJUBOV V, BDG                                    1 d4 d5 2 e4 de 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 g6

BOGOLJUBOV V, FRENCH                                            1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 e5 c5 5 Bd2

BOGOLJUBOV V, KGA; JAENISCH V                            1 e4 e5 2 f4 exf4 3 Bc4 Nf6 4 Nc3 c6

BOGOLJUBOV V, QGD                                   1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Nbd7 5 e3 c6 6 Nf3 Qa5 7 Nd2 Bb4 8 Qc2

BOGOLJUBOV V, QGD                                   1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 Be7

BOGOLJUBOV V, RUY; COUNTERTHRUST               1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 d4 Bg4

BOLESLAVSKY V, GRUN; SZABO V                              1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dc 6 Qxc4 O-O 7 e4 c6

BOLESLAVSKY V, SIC                                      1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 Nc6 6 Be2 e5

BORG OPENING; BASMAN D; MACHO GROB          1 e4 g5

BORISENKO V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Nb8 10 d4 Nbd7

BORISENKO V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Na5 10 Bc2 c5 11 d4 Nc6

BOTVINNIK V, ENGLISH                                1 c4 e5 2 Nc3 Nc6 3 g3 g6 4 Bg2 Bg7 5 e4

BOTVINNIK V, ENGLISH                                1 c4 c5 2 Nc3 Nc6 3 g3 g6 4 Bg2 Bg7 5 e4

BOTVINNIK V, GRUNFELD                                           1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 e3 O-O 6 Qb3 e6

BOTVINNIK V, NIMZO-INDIAN                    1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 d5 5 a3 Bxc3+ 6 Qxc3 Nc6

BOTVINNIK V, QGD                                        1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 Bg5 dc 6 e4 b5           

BOTVINNIK-BRONSTEIN V, DUTCH                           1 d4 f5 2 c4 Nf6 3 g3 e6 4 Bg2 Be7 5 Nc3 O-O 6 e3

BOURDONNAIS V, FRENCH                                         1 e4 e6 2 f4

BOURDONNAIS V, SIC; LOWENTHAL V                     1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 e5

BRADFORD ATTACK, FRENCH                                     1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 e5 Nfd7 5 f4 c5 6 dc Bxc5 7 Qg4

BRADLEY BEACH V, ENGLISH                       1 c4 e5 2 Nc3 Nc6 3 Nf3 Nf6 4 d4 e4

BRAZILIAN;GUNDERAM;LEVENSTEIN;QUEEN'S D 1 e4 e5 2 Nf3 Qe7

BREMEN V, ENGLISH; CARLS V                    1 c4 e5 2 Nc3 Nf6 3 g3

BRENTANO D, KGA; CAMPBELL V;E MORPHY V  1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 d5

BRENTANO DEFENSE, KGA                                          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O d5

BRENTANO DEFENSE, RUY LOPEZ                             1 e4 e5 2 Nf3 Nc6 3 Bb5 g5                           

BRESLAU V, RUY LOPEZ                                3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Be7 10 Re1 O-O 11 Nd4 Ne5 12 f3 Bd6

BREYER D, NIMZOVICH                                 1 e4 Nc6 2 Nc3 Nf6

BREYER G, KGA; HUNGARIAN G; CARRERA              1 e4 e5 2 f4 exf4 3 Qf3

BREYER O, PONZIANI                                    1 e4 e5 2 Nf3 Nc6 3 c3 Nf6 4 d3 Be7 5 b4

BREYER V, CARO KANN                                 1 e4 c6 2 d3

BREYER V, RUY; RETREAT V                         1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Nb8

BREYER V, SLAV                                              1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nbd2

BREYER V, VIENNA                                         1 e4 e5 2 Nc3 Nf6 3 f4 d5 4 fe Nxe4 5 Nf3 Be7

BRIEGER D, QGD                                                            1 d4 d5 2 c4 Bf5

BRODSKY-JONES V, FRENCH                                       1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 e5 Nfd7 5 f4 c5 6 dc Nc6 7 a3 Bxc5 8 Qg4 O-O 9 Nf3 f6

BROMBACHER C-G, BDG                                             1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 c5

BRONSTEIN GAMBIT                                     1 d4 Nf6 2 g4

BRONSTEIN G, SICILIAN                                1 e4 c5 2 Nf3 d6 3 Bb5+ Bd7 4 Bxd7+ Qxd7 5 O-O Nc6 6 c3 Nf6 7 d4

BRONSTEIN V, KID                                         1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 Nf3 d6 5 g3 O-O 6 Bg2 c6 7 O-O Qa5

BRONSTEIN V, NIMZO-INDIAN                   1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3 b6 5 Ne2 Ba6

BRONSTEIN V, SICILIAN                                1 e4 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 g6 5 c4 Bg7 6 Be3 Nf6 7 Nc3 Ng4 8 Qxg4 Nxd4 9 Qd1 e5

BRONSTEIN-BOTVINNIK V, DUTCH                           1 d4 f5 2 c4 Nf6 3 g3 e6 4 Bg2 Be7 5 Nc3 O-O 6 e3

BRONSTEIN-LARSEN V, CARO; NIMZOVICH V         1 e4 c6 2 d4 d5 3 Nc3 de 4 Nxe4 Nf6 Nxf6+ gf

BROOKLYN D; RETREAT V, ALEKHINE        1 e4 Nf6 2 e5 Ng8

BROWN OPENING; GROB                             1 g4

BRYAN C-G, KGA; BRIEN C-G; KIESERITZKY              1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 b5

BUCKER D, GROB                                                          1 g4 Nh6

BUCKER D, SOKOLSKY                                   1 b4 Na6

BUCKER GAMBIT                                                           1 e4 g6 2 d4 Bg7 3 Bc4 b5

BUDAPEST DEFENSE                                      1 d4 Nf6 2 c4 e5

BUGAYEV ATTACK                                                         1 b4 e5 2 a3

BULLFROG G; WEIDENHAGEN G; KRABBE G;    1 d4 Nf6 2 g4  (OCHSENFROSCH G; POISONED SPIKE)

BULLOCKUS-JOHANSEN GAMBIT                              1 Nc3 e5 2 Nf3 Bc5

BUNTIN GAMBIT, ALEKHINE                                       1 e4 Nf6 2 e5 Nd5 3 e6

BURN V, FRENCH                                                          1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 dxe4

BUSCH-GLATZ GAMBIT                                 1 e4 e5 2 Nf3 Bc5

BYRNE V, SICILIAN                                         1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 a6 6 Be3

CALABRIAN C-G, BISHOP; CALABRESE C-G              1 e4 e5 2 Bc4 f5

CALABRIAN GAMBIT, KGA; GRECO GAMBIT            1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 Bg7 5 h4 h6 6 d4 d6 7 hg hg 8 Rxh8 Rxh8 9 Nc3 c6 10 Ne5 

CAMBRIDGE GAMBIT, ALEKHINE'S DEFENSE          1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 c4 Nb6 5 f4 g5

CAMBRIDGE SPRINGS D, QGD; PILLSBURY V   1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Nbd7 5 e3 c6 6 Nf3 Qa5

CAMPBELL V, KGA; BRENTANO; E MORPHY V   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 d5

CAMPOMANES A, CARO-KANN                   1 e4 c6 2 d4 d5 3 Nc3 Nf6

CANAL G, QGD                                                1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 c5 5 cxd5 Qb6

CANAL V, ITALIAN                                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 d3 Nf6 5 Nc3 d6 6 Bg5

CANAL V, QGD; VENICE V                                            1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 c5 5 cxd5 Qb6

CANARD OPENING                                                        1 d4 Nf6 2 f4

CAPABLANCA FREEING MANEUVER, QGD               1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 c6 8 Bd3 dc 9 Bxc4 Nd5

CAPABLANCA V, QGD                                    1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 b6 8 cd ed 9 Bb5

CAPABLANCA V, QID                                      1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 g3 Bb7 5 Bg2 Bb4+

CARLS V; BREMEN V, ENGLISH                    1 c4 e5 2 Nc3 Nf6 3 g3

CARLSBAD V, DUTCH                                     1 d4 f5 2 g3 g6 3 Bg2 Bg7 4 Nh3

CARLSBAD V, SICILIAN                                  1 e4 c5 2 b4 cxb4 3 a3 bxa3

CARLSBAD V, SLAV                                         1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 Ne5 Nbd7 7 Nxc4 Qc7 8 g3 e5

CARO V, PONZIANI                                         1 e4 e5 2 Nf3 Nc6 3 c3 d5 4 Qa4 Bd7

CARO-KANN DEFENSE                                   1 e4 c6

CARO KANN GAMBIT                        1.e4 c6 2.d4 d5 3.c3

CARRERA GAMBIT; BREYER GAMBIT                        1 e4 e5 2 f4 exf4 3 Qf3   

CATALAN OPENING                                                      1 d4 Nf6 2 c4 e6 3 g3

CAVALLOTTI C-G; ALBIN COUNTER CAMBIT           1 d4 d5 2 c4 e5

CENTER ATTACK, RUY LOPEZ                       1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 d4

CENTER ATTACK, RUY LOPEZ                       1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 d4 exd4

CENTER COUNTER GAME; SCANDANAVIAN           1 e4 d5

CENTER GAME                                                1 e4 e5 2 d4                              

CENTRAL G, KGA                                             1 e4 e5 2 f4 exf4 3 d4

CHAMELEON SICILIAN                                  1 e4 c5 2 Nc3 Nc6 3 Nge2

CHAMELEON V, SIC; WING V                       1 e4 c5 2 d3

CHAMPION'S D; STEINITZ D DEFERRED; RUY  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6  (MODERN STEINITZ D)

CHARLICK GAMBIT                                                        1 d4 e5 

CHASE V; FOUR PAWNS ATTACK, ALEK      1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 c4 Nb6 5 f4

CHELYABINSK V, SICILIAN                                           1 e4 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e5 6 Ndb5 d6 7 Bg5 a6 8 Na3 b5

CHENOBOSKIAN VARIATION, DURKIN'S ATTACK 1.Na3 a6

CHEPUKAITIS GAMBIT                                   1 d4 Nf6 2 Bg5 c5 3 d5 Qb6 4 Nc3 Qxb2 5 Bd2 Qb6

CHICAGO G; IRISH G; SCHULZE-MULLER G              1 e4 e5 2 Nf3 Nc6 3 Nxe5 Nxe5 4 d4

CHIGORIN D, QGD                                          1 d4 d5 2 c4 Nc6

CHIGORIN INDIAN D; OLD INDIAN D         1 d4 Nf6 2 c4 d6

CHIGORIN V, FRENCH                                   1 e4 e6 2 Qe2

CHIGORIN V, QGD                                                         1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 Bd6       

CHIGORIN V, QP; PONZIANI V                     1 d4 d5 2 Nc3

CHIGORIN V, RUY,CLOSED                                          3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Na5 10 Bc2 c5 11 d4 Qc7

CHIGORIN V, SIC; CLOSED V                        1 e4 e5 2 Nc3

CHINESE V, PIRC                                             1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 Be2 Bg7 5 g4

CLASSICAL D, KGA                                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Qh4+ 4 Kf1 g5

CLASSICAL D, KGD                                          1 e4 e5 2 f4 Bc5

CLASSICAL D, RUY ; CORDEL D                    1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5

CLASSICAL MAIN LINE, GRUNFELD                           1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 cxd5 Nxd5 5 e4 Nxc3 6 bxc3 Bg7 7 Bc4

CLASSICAL V, BISHOP                                    1 e4 e5 2 Bc4 Bc5

CLASSICAL V, CARO KANN                                           1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Bf5

CLASSICAL V, FRENCH                                   1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7              

CLASSICAL V, NIMZO-INDIAN                      1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2

CLASSICAL V, PIRC                                          1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 Nf3 Bg7 5 Be2 O-O 6 O-O

CLASSICAL V, QGD                                          3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 c6 8 Bd3 dc 9 Bxc4 Nd5 10 Bxe7 Qxe7 11 O-O Nxc3 12 Rxc3 e5

CLASSICAL V, RUY,CLOSED                                          9 h3 Na5 10 Bc2 c5 11 d4 Qc7 12 Nbd2

CLEMENZ OPENING                                       1 h3

CLOSE OPENING                                                            1 d4 d5

CLOSED D, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7

CLOSED SCANDINAVIAN                               1 e4 d5 2 Nc3

CLOSED V, SIC; CHIGORIN V                        1 e4 c5 2 Nc3

COCHRANE GAMBIT, PETROFF                    1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 Nxf7

COCHRANE V, KGA                                                        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 f3

COCQUIO C-G, QGD                                      1 d4 d5 2 c4 Nf6 3 cxd5 c6

COLIBRI OPENING; GROB                                            1 g4

COLLE SYSTEM                                                1 d4 d5 2 Nf3 Nf6 3 e3

COLMAN V, 2 KNIGHTS                                 1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 ed Na5 6 Bb5+ c6 7 dc bc 8 Qf3 Rb8

COLORADO D, NIMZOVICH DEFENSE                       1 e4 Nc6 2 Nf3 f5

COMPROMISED DEFENSE, EVANS GAMBIT             1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 d4 ed 7 O-O dc

CORDEL D, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O Nxe4 5 d4 Be7 6 Qe2 Nd6 7 Bxc6+ bc 8 de Nf5

CORDEL D, RUY; CLASSICAL                         1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5

CORDEL GAMBIT, RUY LOPEZ                      1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5 4 c3 f5 5 d4 fxe4

CORKSCREW COUNTER-GAMBIT, LATVIAN            1 e4 e5 2 Nf3 f5 3 Nxe5 Nf6 4 Bc4 fe 5 Nf7 Qe7 6 Nxh8 d5

CORN STALKS                                                  1 e4 a5

CORTLEVER V, SICILIAN                                1 e4 c5 2 Nf3 d6 3 d4 Nf6 4 dxc5 Nxe4 5 cxd6

COTTER G; ALLGAIER G, KGA                       1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5

COUNTER-FIANCHETTO V, QGA                 1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 e6 5 Bxc4 c5 6 O-O a6 7 Qe2 Nc6 8 dxc5

COUNTERATTACK V, RUY              see Bogoljubov variation

COUNTERTHRUST V, KID                                             1 d4 Nf6 2 c4 g6 3 g3 d5 4 Bg2 Bg7

COZIO ATTACK, KGA                                      1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 g5 5 Qf3

COZIO D,KGA;HANNEKEN;PRUSSIAN;                       1 e4 e5 2 f4 exf4 3 Bc4 Nf6 (LICHTENHEIN C-A)

COZIO D, RUY LOPEZ                                     1 e4 e5 2 Nf3 Nc6 3 Bb5 Nge7

CRAB O; WARE O; MEADOW HAY OPENING           1 a4

CRACOW V, ITALIAN                                      1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Nf6 5 d4 ed 6 cd Bb4+ 7 Kf1

CRAZY CAT O; KRAZY KAT OPENING                          1 Nh3 e5 2 f3 d5 3 Nf2

CUNNINGHAM GAMBIT, KGA                                     1 e4 e5 2 f4 exf4 3 Nf3 Be7

CURRY OPENING                                                           1 d4 Nf6 2 Nf3 g6 3 Bg5 Bg7 4 e3 d6 5 Bd3 O-O 6 Nbd2, c3, Qc2, O-O-O

CZECH D, SLAV; OPEN SLAV D                      1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5

CZECH V, BENONI                                          1 d4 Nf6 2 c4 c5 3 d5 e5 4 Nc3 d6 5 e4 Be7

CZECH V, ENGLISH                                         1 c4 Nf6 2 Nc3 d5 3 cd Nxd5 4 g3 g6 5 Bg2 Nb6

DABERITS DEFENSE, BDG                                            1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 c5

DALESIO G; POLISH G; PIRC-LISITSIN G     1 Nf3 f5 2 e4 fxe4 3 Ng5

DAMHAUG GAMBIT                                                      1 Nc3 d5 2 f4 e5

DAMIANO DEFENSE                                       1 e4 e5 2 Nf3 f6

DANISH GAMBIT, CENTER                                           1 e4 e5 2 d4 exd4 3 c3

DANUBE G; DONAU GAMBIT                                      1 d4 Nf6 2 c4 g6 3 d5 b5 4 cxb5 a6 5 bxa6 c6

DANVERS OPENING                                                      1 e4 e5 2 Qh5

DAVENPORT GAMBIT, NIMZOVICH DEFENSE         1 e4 Nc6 2 Nf3 f5

DE BRUYCKER D, CARO KANN                     1 e4 c6 2 d4 Na6

DECK V, QID                                                     1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 g3 Bb7 5 Bg2 Qc8

DELAYED EXCHANGE RUY LOPEZ DEFERRED;         3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Bxc6 (STEENWIJK; EXCHANGE V DOUBLE DEFERRED)

DESPRES OPENING                                         1 h4

DEVIN GAMBIT                                               1 d4 Nf6 2 c4 e6 3 g4

DIEMER A, BDG                                               1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 g6 6 Bf4

DIEMER G, BDG                                              1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 fxe4

DIEMER-ALAPIN G, FRENCH                                       1 e4 e6 2 d4 d5 3 Be3 dxe4 4 f3

DIEMER-DUHM G, CARO KANN                  1 e4 c6 2 d4 d5 3 c4

DIEMER-DUHM G, FRENCH                                         1 e4 e6 2 d4 d5 3 c4

DILWORTH GAMBIT, NIMZO-INDIAN DEFENSE      1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e4

DILWORTH V; KLECZYNSKI V, RUY LOPEZ 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Bc5 10 Nbd2 O-O 11 Bc2 Nxf2

DONAU G; DANUBE GAMBIT                                      1 d4 Nf6 2 c4 g6 3 d5 b5 4 cxb5 a6 5 bxa6 c6

DORY DEFENSE; DOERY DEFENSE                              1 d4 Nf6 2 c4 e6 3 Nf3 Ne4

DOUBLE DUCK                                                1 f4 f5 2 d4 d5

DOUBLE FIANCHETTO ATTACK                    1 b3, Bb2, g3, Bg2

DOUBLE FIANCHETTO DEFENSE, ENGLISH              1 c4 c5 2 Nf3 Nf6 3 g3 b6 4 Bg2 Bb7 5 O-O g6

DOUBLE MUZIO GAMBIT, KGA                    1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O gxf3 6 Qxf3 Qf6 7 e5 Qxe5 8 Bxf7

DOUBLE RUY LOPEZ OPENING, 4 KTS        1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4

DOUBLE WHAMMY, ENGLISH                                    1 c4 e5 2 f4

DRAGON V, SICILIAN                                     1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 g6

DRESDEN OPENING                                                      1 e4 e5 2 Nf3 Nc6 3 c4

DRIES COUNTERGAMBIT, BDG                    1 d4 d5 2 e4 dxe4 3 Nc3 c5

DRUNKEN KNIGHT OPENING                                      1 Nh3

DUBOIS GAMBIT, BIRD'S OPENING           1.f4 e5 2.Nc3

DUHM-DIEMER G, CARO KANN                  1 e4 c6 2 d4 d5 3 c4

DUHM-DIEMER G, FRENCH                                         1 e4 e6 2 d4 d5 3 c4

DUISBURG G, QGD; SCHARA-HENNIG G    1 d4 d5 2 c4 e6 3 Nc3 c5 4 cxd5 cxd4

DUKE OF BRUNSWICK GAMBIT, PHILIDOR              1 e4 e5 2 Nf3 d6 3 d4 Bg4 4 dxe5 Nd7

DUKE OF COURLAND V, LATVIAN GAMBIT              1 e4 e5 2 Nf3 f5 3 Bc4 fe 4 Ne5 Qg5 5 d4 Qg2 6 Qh5 g6 7 Bf7 Kd8 8 Bg6 Qh1 9 Ke2 c6 10 Nc3

DUNST, GAMBIT VARIATION                       1 Nc3 d5 2 e4 dxe4 3 d3

DUNST;HEINRICHSEN;QN A;WILD BULL; KOTRC   1 Nc3    

DURAS V, QGD                                                1 d4 d5 2 c4 e6 3 Nf3 Nf6 4 Bg5 h6

DURAS V, RUY LOPEZ                                    1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 d3 d6 5 c4

DURAS V, RUY LOPEZ                                    1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 d3 d6 6 c4

DURKIN O; SODIUM ATTACK                                      1 Na3

DUTCH-DIEMER GAMBIT                                             1 d4 f5 2 e4 fxe4 3 Nc3 Nf6 4 f3

DUTCH & PERUVIAN V; BEEN & KOOMEN, QGD    1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 c5

DUTCH ATTACK; BIRD OPENING                 1 f4

DUTCH DEFENSE; STEIN O; RIVIERE OPENING       1 d4 f5

DUTCH GAMBIT                                              1 d4 f5 2 Qd3 e6 3 g4

DUTCH INDIAN; LENINGRAD V                   1 d4 f5 2 g3

DUTCH V, SLAV                                               1 d4 d5 2 c4 c6 3 Nc3 Nf6 4 Nc3 dc 5 a4 Bf5 6 e3

DUTHILLEUK G, BDG                                      1 d4 d5 2 e4 de 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 e6 6 Bd3 Nc6 7 Bg5 Be7 8 Ne4

DUZ-KHOTIMIRSKY V, OLD INDIAN                           1 d4 Nf6 2 c4 d6 3 Nc3 Nbd7 4 e3 e5 5 Bd3

DZINDZIHASHVILI V; THE DJIN                     1 d4 Nf6 2 c4 e6 3 Nf3 a6

E. MORPHY; CAMPBELL; BRENTANO D, KGA          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 d5

EDINBURGH V, CARO-KANN                        1 e4 c6 2 d4 d5 3 Nd2 Qb6

EKSTROM V, RUY LOPEZ                               3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 Qe2 Be7 10 Rd1 O-O 11 c4 bc 12 Bxc4 Qd7

ELBERT C-G, BDG                                                          1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 e5

ELEPHANT GAMBIT; QUEEN PAWN CENTER PAWN 1 e4 e5 2 Nf3 d5

ELLIS GAMBIT, CENTER COUNTER                            1 e4 d5 2 exde5 c6

ELLIS GAMBIT, FRENCH DEFENSE                              1 e4 e6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 e5

EMERY-HOROWITZ V, RUY LOPEZ                             1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 O-O 8 c3 d5 9 d4

ENGLISH DEFENSE                                                        1 d4 e6 2 c4 b6

ENGLISH GAMBIT                                                          1 c4 b5

ENGLISH KNIGHTS O; PONZIANI; STAUNTON O     1 e4 e5 2 Nf3 Nc6 3 c3

ENGLISH OPENING; SICILIAN ATTACK       1 c4                   

ENGLISH ORANG-UTAN                                               1 c4 Nf6 2 b4

ENGLISH QUEEN                                                            1 c4 e5 2 Qa4

ENGLISH SPIKE                                                1 c4 f5 2 g4

ENGLISH V, RUY; WORRALL ATTACK                         1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Qe2 b5 7 Bb3 O-O 8 c3 d6 9 d4 Bg4

ENGLUND GAMBIT; BEHTING GAMBIT                    1 d4 e5 2 dxe5 Nc6

ESTONIAN V, RUY; HOWELL; KERES; MOSCOW     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 dxe5 Be6 9 Qe2

EUWE V, BDG                                                  1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 e6

EVANS GAMBIT                                                              1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4

EVANS GAMBIT DECLINED                                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 without 4...Bxb4

EVERGLADES D, ALEKHINE                           1 e4 Nf6 2 e5 Ng8 3 d4 f5

EXCHANGE DEFERRED, RUY; TREYBEL; FLOHR  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 Bxc6

EXCHANGE V DOUBLE DEFERRED, RUY     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Bxc6

EXCHANGE V, CARO KANN                                          1 e4 e6 2 d4 d5 3 exd5

EXCHANGE V, FRENCH                                  1 e4 e6 2 d4 d5 3 exd5 exd5

EXCHANGE V, GRUNFELD                                            1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 cxd5 Nxd5

EXCHANGE V, QGD                                                        1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 cxd5

EXCHANGE V, RUY LOPEZ                                            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Bxc6

EXCHANGE V, SLAV                                        1 d4 d5 2 c4 c6 3 cxd5 cxd5

EXCHANGE YUGOSLAV V, KID                      1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 Nf3 d6 5 g3 O-O 6 Bg2 c5 7 O-O Nc6 8 dc dc

EXTENDED BISHOP SWAP, FRENCH                           1 e4 e6 2 d4 d5 3 e5 Bd7

FAJAROWICZ V, BUDAPEST; LEIPZIG V       1 d4 Nf6 2 c4 e5 3 dxe5 Ne4

FALKBEER COUNTER-GAMBIT, KGD                          1 e4 e5 2 f4 d5

FALKBEER V, VIENNA                                     1 e4 e5 2 Nc3 Nf6

FANTASY V, CARO; LILIENFISCH V                             1 e4 c6 2 d4 d5 3 f3

FEGATELLO A, 2 KTS; FRIED LIVER A           1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 ed Nxd5 6 Nxf7

FIANCHETTO D, RUY; BARNES D                 1 e4 e5 2 Nf3 Nc6 3 Bb5 g6

FIANCHETTO DEL REY; KING'S FIANCHETTO   1 e4 g6

FIANCHETTO V, BENONI                                              1 d4 Nf6 2 c4 c5 3 d5 e6 4 Nc3 ed 5 cd d6 6 Nf3 g6 7 g3 Bg7 8 Bg2 O-O

FIANCHETTO V, KID                                       1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 Nf3 d6 5 g3

FIANCHETTO V, SICILIAN                                             1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 g6

FINGERFEHLER V;  see Fingerslip

FINGERSLIP V, FR; FINGERFEHLER V          1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 Bd2

FISCHER ATTACK, SICILIAN                           1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e6 6 Bc4           

FISCHER D, KGA                                                             1 e4 e5 2 f4 exf4 3 Nf3 d6

FISCHER V, RUY LOPEZ                                  3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 O-O 8 c3 d5 9 exd5 Nxd5 10 Nxe5 Nxe5 11 Rxe5 c6 12 g3

FISCHER-BARENDREGT V, RUY LOPEZ                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Bxc6 dxc6 5 O-O

FLEISSIG G; SMITH-MORRA G, SICILIAN    1 e4 c5 2 d4 cxd4 3 c3

FLEISSIG V, SCOTCH; MEITNER V                               1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Be3 Qf6 6 c3 Nge7 7 Nc2

FLOHR V, ALEKHINE                                       1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 Nf3 Bg4 5 Be2 c6

FLOHR V, GRUNFELD                                     1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qa4+

FLOHR V, GRUNFELD                                     1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 e3 O-O 6 Bd3 c6 7 O-O Bf5

FLOHR V, QGA                                                 1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 Be6

FLOHR V, RUY; TREYBEL; EXCHANGE V DEF            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 Bxc6

FLOHR-MIKENAS V, ENGLISH                       1 c4 Nf6 2 Nc3 e6 3 e4

FLOHR-ZAITSEV V; LENZERHEIDE V, RUY                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Bb7

FLUID FORMATION, DUTCH                                       1 d4 f5 2 c4 Nf6 3 g3 g6 4 Bg2 Bg7 5 Nf3 O-O 6 O-O d6

FOLKESTONE V; SWEDISH V; QGD                             1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3 c4              

FOUR KNIGHTS OPENING                                            1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6

FOUR KNIGHTS V, ENGLISH                          1 c4 e5 2 Nc3 Nc6 3 Nf3 Nf6

FOUR KNIGHTS V, QGA                                 1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 e6 5 Bxc4 c5 6 O-O a6 7 Qe2 Nc6 8 Nc3

FOUR KNIGHTS V, SICILIAN                          1 e4 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 Nf6 5 Nc3

FOUR PAWNS ATTACK, ALEKHINE; CHASE V           1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 c4 Nb6 5 f4

FOUR PAWNS ATTACK, KID                                         1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 f4

FRANCO-BENONI                                                          1 d4 c5 2 d5 e6 3 e4

FRANCO-INDIAN DEFENSE                                          1 d4 e6

FRANKENSTEIN-DRACULA V, VIENNA                      1 e4 e5 2 Nc3 Nf6 3 Bc4 Nxe4 4 Qh5 Nd6 5 Bb3 Nc6 6 Nb5 g6 7 Qf3 f5 8 Qd5 Qe7 9 Nc7 Kd8

FRANKFORT D, RUY; GUNDERAM SYSTEM              1 e4 e5 2 Nf3 Nc6 3 Bb5 Qf6

FRASER A, EVANS; FRASER-MORTIMER A      1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 ed 7 O-O d6 8 cd Bb6 9 Nc3 Bg4 10 Qa4

FRASER ATTACK, SCOTCH                                            1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Qh4 5 Nf3

FRASER DEFENSE, LATVIAN                          1 e4 e5 2 Nf3 f5 3 Nxe5 Nc6

FRASER V, KGA                                                1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 g5 5 Nc3 Bg7 6 g3 fxg3 7 Qf3

FRASER-MINCKWITZ V, VIENNA                                1 e4 e5 2 Nc3 Nc6 3 f4 ef 4 d4 Qh4+ 5 Ke2 b6

FRASER-MORTIMER ATTACK   see Fraser Attack

FRED D; (FROM REVERSED)                                         1 e4 f5

FRENCH DEFENSE                            1 e4 e6

FRERE V, FRENCH                                                          1 e4 e6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Qd5

FRIC OPENING; GROB                                   1 g4

FRIED FOX, ALEKHINE                                    1 e4 Nf6 2 Bc4 Nxe4 3 Bxf7+

FRIED LIVER ATTACK, FEGATELLO ATTACK, 2 KTS   see Fegatello Attack

FRIESS ATTACK, RUY LOPEZ                         1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Nxe5

FRITZ GAMBIT, BDG                                       1 d4 d5 2 e4 dxe4 3 Bc4

FRITZ GAMBIT, GROB                                    1 g4 d5 2 Bg2 Bxg4

FRITZ V, 2 KNIGHTS                                        1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 ed Nd4   

FROM DEFENSE, KGA                                     1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O gxf3 6 Qxf3 Qe7

FROM GAMBIT                                                1 f4 e5

FURMAN-TAIMANOV V; WING V, RUY LOPEZ        1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 b5 5 Bb3 Na5

FYFE GAMBIT, VIENNA                                  1 e4 e5 2 Nc3 Nc6 3 d4

GAMA G, KGA                                                  1 e4 e5 2 f4 exf4 3 g3 fxg3 4 Nf3

GAMBIT 59                                                       1 g3 d5 2 Bg2 e5 3 b4

GARY GAMBIT, SICILIAN                                              1 e4 c5 2 Nf3 e6 3 d4 cd 4 Nxd4 Nc6 5 Nb5 d6 6 c4 Nf6 7 N1c3 a6 8 Na3 d5

GEDULT V; GEDULT-GUNDERAM SYS; BARNES   1 f3

GEDULT-GUNDERAM SYSTEM                                    1 d4 Nf6 2 f3 d5 3 g4

GELLER V, RUY, MARSHALL                          9 ed Nxd5 10 Nxe5 Nxe5 11 Rxe5 c6 12 d4 Bd6 13 Re1 Qh4 14 g3 Qh3 15 Be3 Bg4 16 Qd3 Nxe3

GELLER V, SCOTCH                                         1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Nb3 Bb6 6 a4 a6 7 Nc3 Nf6

GELLER V, SLAV GAMBIT; GELLER-TOLUSH             1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 e4

GENOA OPENING; GROB                                             1 g4

GHULAM KASSIM G; KOCH G, KGA                             1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 d4  

GIANUTIO C-G, KGA                                       1 e4 e5 2 f4 exf4 3 Bc4 f5

GIERTZ-PETERS G, BDG                                 1 d4 d5 2 e4 dxe4 3 Nc3 e6 4 f3

GINSBERG G, SICILIAN                                  1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Bc4

GIUOCO PIANISSIMO                                    1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 d3

GIUOCO PIANO; ITALIAN OPENING                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5

GLASSCOE GAMBIT                                                       1 Nc3 f5 2 g4

GLATZ GAMBIT                                                1 e4 e5 2 Nf3 Bc5

GLEDHILL ATTACK, FRENCH                                        1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 e5 Nfd7 5 Qg4

GLIGORIC V, KID                                             1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Be2 e5 7 Be3              

GLORIA, SICILIAN                                           1 e4 c5 2 c4 d6 3 Nc3 Nc6 4 g3 h5

GOERING ATTACK, EVANS GAMBIT                           1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 ed 7 O-O d6 8 cd Bb6 9 Nc3 Na5 10 Bg5

GOERING GAMBIT, SCOTCH                                       1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 c3

GOETBORG V; ARGENTINE V, SIC, NAJDORF           1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6 6 Bg5 e6 7 f4 Be7 8 Qf3 h6 9 Bh4 g5

GOLDMAN V, CARO-KANN                                          1 e4 c6 2 Nc3 d5 3 Qf3

GRAND PRIX V, SICILIAN                               1 e4 c5 2 Nc3 d6 3 f4

GRAZ V, RUY LOPEZ                                       1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 b5 5 Bb3 Bc5

GREAT SNAKE, ENGLISH                                               1 c4 g6

GRECO COUNTER-GAMBIT; LATVIAN C-G               1 e4 e5 2 Nf3 f5

GRECO DEFENSE                                                            1 e4 e5 2 Nf3 Qf6

GRECO GAMBIT, BISHOP'S OPENING                        1 e4 e5 2 Bc4 Nf6 3 f4

GRECO GAMBIT, KGA; CALABRIAN G         see Calabrian G 

GRECO V, ITALIAN                                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Nf6 5 d4 exd4 6 cxd4 Bb4+ 7 Nc3 Nxe4 8 O-O Nxc3

GRECO-LOLLI GAMBIT; WILD MUZIO G, KGA          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Bxf7+

GREEK D; QUEEN'S FIANCHETTO D; OWEN'S D      1 e4 b6

GREEN V, KGA; KOLISCH DEFENSE                             1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 d6           

GRIGORIEV V, SICILIAN                                 1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 g6 6 Be3 Bg7 7 Be2 Nc6 8 Qd2 O-O 9 O-O-O

GRIMM ATTACK, KGA                                    1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 g5 5 Nc3 Bg7 6 d4 d6 7 e5

GROB; SPIKE; KOLIBRI; BROWN; FRIC; GENOA; AHLHAUSEN; SAN PIER D'ARENA  1 g4

GRUNFELD DEFENSE                                     1 d4 Nf6 2 c4 g6 3 Nc3 d5

GRUNFELD GAMBIT                                       1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Bf4 Bg7 5 e3 O-O

GRUNFELD SPIKE                                            1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 g4

GUATEMALAN DEFENSE                               1 e4 b6 2 d4 Ba6

GUIMARD V, FRENCH                                    1 e4 e6 2 d4 d5 3 Nd2 Nc6 4 Ngf3 Nf6 5 e5 Nd7

GUNDERAM A, CARO KANN                                        1 e4 c6 2 d4 d5 3 exd5 cxd5 4 c4

GUNDERAM ATTACK, BDG                                          1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 g4 Bg6 6 h4

GUNDERAM D, BDG                                       1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 ef 5 Nxf3 h5

GUNDERAM D; LEVENSTEIN D; QUEEN'S D             1 e4 e5 2 Nf3 Qe7

GUNDERAM V; TARTAKOWER'S D, BDG    1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 Bf5                            

GUNDERAM'S 2ND DEFENSE, BDG                            1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 c6

GUNSBERG DEFENSE, SCOTCH                    1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Be3 Qf6 6 c3 Nge7 7 Bb5 Nd8

GURGENIDZE V, CARO KANN                                      1 e4 c6 2 d4 d5 3 Nc3 g6 4 e5 Bg7 5 f4 h5

GURGENIDZE V, CARO KANN                                      1 e4 c6 2 d4 d5 3 Nc3 b5

GURGENIDZE V, SICILIAN                                            1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 g6 5 c4 Nf6 6 Nc3 Nxd4 7 Qxd4 d6

HABERDITZ V, FRENCH                                  1 e4 e6 2 d4 d5 3 Nd2 f5

HABICHD                                                          1 d4 c5 2 d5 Nf6 3 Nf3 c4

HALASZ-JACOBSEN GAMBIT                                        1 e4 e5 2 Nf3 d5 3 exd5 Bd6

HALF GIUOCO PIANO; SEMI-ITALIAN OPENING     1 e4 e5 2 Nf3 Nc6 3 Bc4 d6

HALL V, CENTER                                                            1 e4 e5 2 d4 exd4 3 Qxd4 Nc6 4 Qc4

HAMMERSCHLAG O; PORK CHOP OPENING            1 f3 e5 2 Kf2

HAMPPE O; VIENNA GAME; QUEEN'S KNIGHT O   1 e4 e5 2 Nc3

HAMPPE-ALLGAIER GAMBIT, VIENNA                      1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 Nf3 g5 5 h4 g4 6 Ng5

HAMPPE-ALLGAIER-THOROLD G, VIENNA               1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 Nf3 g5 5 h4 g4 6 Ng5 h6 7 Nxf7 Kxf7 8 d4

HAMPPE-MUZIO G, VIENNA                        1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 Nf3 g5 5 Bc4 g4 6 O-O

HANHAM SYSTEM; HAYWARD SYSTEM                    1 c3, 2 Qc2, 3 d3

HANHAM V, PHILIDOR                                  1 e4 e5 2 Nf3 d6 3 d4 Nd7

HANNEKEN D, KGA; COZIO D; PRUSSIAN D; LICHTENHEIN C-A  1 e4 e5 2 f4 exf4 3 Bc4 Nf6

HANS MUELLERS V, BDG; VIENNA V                         1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5                       

HANSTEIN GAMBIT, KGA                                             1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 Bg7 5 O-O            

HARDING GAMBIT, RUY LOPEZ                   1 e4 e5 2 Nf3 Nc6 3 Bb5 d5

HARKSEN GAMBIT, RUY LOPEZ                   1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 c4

HARRWITZ ATTACK, QGD; RUBINSTEIN    1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bf4 

HARTLAUB GAMBIT, CENTER COUNTER                  1 e4 d5 2 exd5 e6

HAYWARD SYSTEM; HANHAM SYSTEM                    1 c3, 2 Qc2, 3 d3

HEATH V, KGD                                                 1 e4 e5 2 f4 Bc5 3 Nf3 d6 4 b4

HEDGEHOG D, RUY LOPEZ                                           1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O d6 5 d4 Bd7 6 Nc3 Be7

HEDGEHOG V, ENGLISH                                               1 c4 Nf6 2 Nc3 e6 3 Nf3 b6

HEINRICHSEN; DUNST;                                 1 Nc3 (QUEEN'S KNIGHT ATTACK)

HEMPEL O; SARAGOSSA OPENING                            1 c3

HENNEBERGER V, FRENCH                                         1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Be3

HENNEBERGER V, SWISS V; QGD                1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 a6

HENNIG-SCHARA G, QGD; DUISBURG GAMBIT      1 d4 d5 2 c4 e6 3 Nc3 c5 4 cxd5 cxd4

HENNING GAMBIT, CARO KANN                 1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 Bc4

HERGERT GAMBIT, FRENCH DEFENSE                      1 e4 e6 2 d4 d5 3 c3

HERRSTROM GAMBIT                                    1 Nf3 g5

HERZFELD D, KGA; PORTUGUESE D; VIENNA D      1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 Nc6

HICKMAN G, ENGLISH                                   1 c4 f5 2 e4 fxe4 3 d3

HIPPOPOTAMUS                                                            1 e4 Nh6, Nf7

HOBBS GAMBIT                                              1 f4 g5

HOLLOWAY DEFENSE, KGA                                         1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O gxf3 6 Qxf3 Nc6

HOLMOV V, RUY LOPEZ                                1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 Be6

HORNY DEFENSE, KGA                                  1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 Qxg4 Nf6 8 Qxf4

HOROWITZ GAMBIT, BISHOP'S OPENING 1 e4 e5 2 Bc4 Nf6 3 d4

HORT V, ENGLISH                                           1 c4 e5 2 Nc3 Nc6 3 g3 g6 4 Bg2 Bg7 5 e3 d6 6 Nge2 Be6  

HORT-ANTOSHIN V, DUTCH                                       1 d4 f5 2 g3 Nf6 3 Bg2 d6

HOWELL A; KERES; MOSCOW; ESTONIAN, RUY  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 Qe2

HROMADKA DEFENSE; LOOSE GAMBIT                    1 d4 Nf6 2 c4 c5

HUBNER V, NIMZO-INDIAN                                        1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3 c5 5 Bd3 Nc6 6 Nf3 Bxc3+ 7 bxc3

HUBSCH GAMBIT                                                           1 d4 d5 2 Nc3 Nf6 3 e4 Nxe4

HUNGARIAN A; BENKO; BILEK; BARCZAY;     1 g3

HUNGARIAN DEFENSE                                  1 e4 e5 2 Nf3 Nc6 3 Bc4 Be7

HUNGARIAN G; BREYER G, KGA                  1 e4 e5 2 f4 exf4 3 Qf3

HUNGARIAN V, GRUNFELD                                         1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dc 6 Qxc4 O-O 7 e4 a6

HUNT G, ALEKHINE                                        1 e4 Nf6 2 e5 Nd5 3 c4

HUNT O; ORANGUTAN O; SOKOLSKY; POLISH   1 b4

IAGO DEFENSE                                                1 d4 Nf6 2 c4 Nc6

IL FIANCHETTO DI DONNA; OWEN D; GREEK D; QUEEN FIANCHETTO  1 e4 b6

ILYIN-GENEVSKY V, DUTCH                          1 d4 f5 2 g3 Nf6 3 Bg2 e6 4 Nf3 Be7 5 O-O O-O 6 c4 d6     

IMPROVED LISITSIN GAMBIT                       1 Nf3 f5 2 d3

INDIAN OPENING                                                          1 e4 e5 2 d3

INDIAN SMALL CENTER                                               1 d4 Nf6 2 c4 e6 3 Nf3 d6

INVERTED HANHAM OPENING                    1 e4 e5 2 Nf3 Nc6 3 Be2 Nf6 4 d3 d5 5 Nbd2

INVERTED HUNGARIAN O; TAYLOR OPENING        1 e4 e5 2 Nf3 Nc6 3 Be2

IRISH ATTACK; POLISH ATTACK                   1 Nc3 e5 2 f4

IRISH G; CHICAGO G; SCHULZE-MULLEER G            1 e4 e5 2 Nf3 Nc6 3 Nxe5 Nxe5 4 d4         

ITALIAN FOUR KNIGHTS VARIATION                         1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 d3 Nf6 5 Nc3

ITALIAN OPENING; GIUOCO PIANO                          1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5

ITALIAN V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Bc5

JACOBSEN-HALASZ GAMBIT                                        1 e4 e5 2 Nf3 d5 3 exd5 Bd6

JAENISCH COUNTER-ATTACK, PHILIDOR  1 e4 e5 2 Nf3 d6 3 d4 Nf6

JAENISCH D, RUY; SCHLIEMANN GAMBIT               1 e4 e5 2 Nf3 Nc6 3 Bb5 f5

JAENISCH V, KGA; BOGOLJUBOV V                     1 e4 e5 2 f4 exf4 3 Bc4 Nf6 4 Nc3 c6

JALALALABAD DEFENSE                                1 e4 e5 2 Nf3 c5

JANOWSKI V, QGD                                                        1 d4 d5 2 c4 e6 3 Nc3 a6

JANOWSKI V, QGD                                         1 d4 d5 2 c4 Nc6 3 Nc3 dxc4 4 Nf3

JANOWSKI-LARSEN V, QGA                                         1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 Bg4

JANZEN-KORTCHNOI GAMBIT, DUTCH                    1 d4 f5 2 h3 Nf6 3 g4

JEROME GAMBIT, ITAL; KENTUCKY OPENING        1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 Bxf7+ Kxf7 5 Nxe5+

JOHANSEN-BULLOCKUS GAMBIT                              1 Nc3 e5 2 Nf3 Bc5

JONGSMA-VAN GEET; KEVITZ-TRAJKOVIC;              1 d4 Nf6 2 c4 Nc6 (BOGOLJUBOV O)

JORDANSKY A, 2 KNIGHTS                                           3 Bc4 Nf6 4 d4 ed 5 O-O Ne4 6 Re1 d5 7 Bd5 Qd5 8 Nc3 Qa5 9 Ne4 Be6 10 Bg5 h6 11 Bh4 g5 12 Nf6 Ke7 13 b4

KADAS OPENING                           1.h4

KAMPARS GAMBIT, BDG                                              1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 g4 Bg6 6 g5 Nd5 7 fe

KAN V, SIC; PAULSEN                                     1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 a6       

KAPENGUT V, ENG; SMYSLOV V; MODERN V          1 c4 e5 2 Nc3 Nf6 3 g3 Bb4          

KARLSRUHE VARIATION, BDG                     1 d4 d5 2 e4 dxe4 3 f3 g6

KARPOV V, ALEKHINE                                    1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 Nf3 g6 5 c4 Nb6 6 ed cd 7 h3 Bg7 8 Be2 O-O 9 Nc3 Nc6 10 O-O Bf5 11 Bf4  

KATALIMOV V, SICILIAN                                1 e4 c5 2 Nf3 b6

KAUFMANN V, PETROFF                               1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 Nf3 Nxe4 5 c4

KAUFMANN V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 d3 Bc5 5 Be3

KAULICH V, BDG                                             1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 c5

KECSKEMET; TIMBUKTU V, RUY LOPEZ     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 d6 7 c3 O-O 8 d4 Bd7 9 Nbd2 Be8

KEENE D, KGD                                                 1 e4 e5 2 f4 Qh4+ 3 g3 Qe7

KEENE/STEAN V, ENGLISH                                           1 c4 e5 2 Nc3 Nc6 3 Nf3 Nf6 4 e3 Bb4 5 Qc2 O-O 6 Nd5 Re8 7 Qf5

KEIDANSKY G; URUSOV G; OUROUSSOFF G            1 e4 e5 2 Bc4 Nf6 3 d4 exd4 4 Nf3

KEMERI V, KID; NEO-GRUNFELD                                1 d4 Nf6 2 c4 g6 3 g3 d5

KENTUCKY O; JEROME G, ITALIAN                            1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 Bxf7+

KERES D; FRANCO-INDIAN; KERES-INDIAN             1 d4 e6 2 c4 Bb4+

KERES DEFENSE, QUEEN PAWN               1.d4 d5 2.Nf3 Bf5

KERES G, KGA;MASON;PARNU;REQUENA;              1 e4 e5 2 f4 exf4 3 Nc3 (WILLEMSON G)

KERES V, ALEKHINE                                        1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 Nf3 g6 5 Bc4 Nb6 6 Bb3 Bg7 7 a4

KERES V, ENGLISH                                          1 c4 e5 2 Nc3 Nf6 3 g3 c6

KERES V, KGD                                                  1 e4 e5 2 f4 d5 3 exd5 e4 4 d3 Nf6 5 Nd2

KERES V, KID:                                                   1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Be2 e5 7 d5 Nbd7 8 Bg5 h6 9 Bh4 g5 10 Bg3 Nh5 11 h4

KERES V, RUY     see Howell Attack           

KERES V, RUY LOPEZ                                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 c4

KERES V, RUY LOPEZ                                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Bxc6 bxc6 5 Nc3

KERES V, RUY LOPEZ                                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 a5

KERES V, RUY, CLOSED                                  9 h3 Na5 10 Bc2 c5 11 d4 Nd7     

KERES V, SIC; BILLIAM ATTACK                    1 e4 c5 2 Ne2

KERES V, SIC;PANOV V                                  1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e6 6 g4             

KERES-PARMA SYSTEM, ENGLISH                              1 c4 c5 2 Nc3 Nf6 3 Nf3 e6 4 g3 Nc6

KEVITZ DEFENSE, ENGLISH                           1 c4 Nf6 2 Nc3 e6 3 e4 Nc6

KEVITZ V, RUY-MARSHALL:                          9 ed Nxd5 10 Nxe5 Nxe5 11 Rxe5 c6 12 Bxd5 cd 13 d4 Bd6 14 Re3       

KEVITZ-TRAJKOVIC D; VAN GEET O; JONGSMA       1 d4 Nf6 2 c4 Nc6  (BOGOLJUBOV O)

KHOLMOV  SEE HOLMOV

KIEL V, CC                                                         1 e4 d5 2 exd5 Nf6 3 d4 Nxd5 4 c4 Nb4

KIESERITZKY ATTACK, 2 KTS; MORPHY V   1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5 Na5 6 d3

KIESERITZKY C-G; BRYAN C-G, KGA                           1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 b5

KIESERITZKY GAMBIT, KGA                                          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5

KING'S BISHOP G; BISHOP'S GAMBIT, KGA               1 e4 e5 2 f4 exf4 3 Bc4

KING'S ENGLISH, ENGLISH                                           1 c4 e5

KING'S FIANCHETTO D; FIANCHETTO DEL REY 1 e4 g6

KING'S FIANCHETTO O;BENKO;BILEK;BARCZAY 1 g3 (HUNGARIAN ATTACK; RAT)

KING'S GAMBIT                                               1 e4 e5 2 f4

KING'S GAMBIT ACCEPTED                           1 e4 e5 2 f4 exf4

KING'S GAMBIT DECLINED                           1 e4 e5 2 f4 without 2...exf4

KING'S HEAD                                                    1 e4 e5 2 f3

KING'S INDIAN ATTACK; RETI; ZUKERTORT             1 Nf3 Nf6                          

KING'S INDIAN DEFENSE                                              1 d4 Nf6 2 c4 g6

KING'S KNIGHT GAMBIT, KGA                      1 e4 e5 2 f4 exf4 3 Nf3

KING'S KNIGHT OPENING                                            1 e4 e5 2 Nf3

KING'S OWN COUNTERGAMBIT                1.e4 f5

KING'S OWN G; TUMBLEWEED, KGA                        1 e4 e5 2 f4 exf4 3 Kf2

KING'S PAWN OPENING; ROYAL OPENING              1 e4

KITCHENER FOLLY                                          1 e4 e5 2 Bc4 Nf6 3 d3 Be7 4 Nf3 O-O

KLAUSE JUNGE V; ABRAHAMS V; NOTEBOOM V, QGD        see Abrahams V

KLECZYNSKI V, RUY; DILWORTH V   see Dilworth V             

KLING & HORWITZ COUNTER-ATTACK, KGA           1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O Qe7

KLOSS A, BDG                                                  1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 g6 6 Bc4 Bg7 7 O-O O-O 8 Kh1

KLUVER GAMBIT                                                            1 Nc3 f5 2 e4 fxe4 3 d3

KMOCH V; NOA V, NIMZO-INDIAN                            1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 d5

KNIGHT D, QGD; MARSHALL DEFENSE                      1 d4 d5 2 c4 Nf6

KNIGHT V, CARO KANN                                 1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Nf6

KNIGHT'S TOUR, ALEKHINE                          1 e4 Nf6 2 e5 Ne4

KNOORE V, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 Nc3

KOCH G; GHULAM KASSIM G, KGA                             1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 d4

KOLIBRI; SPIKE; GROB                                   1 g4

KOLISCH D; GREEN V, KGA                                          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 d6

KONSTANTINOPOLSKY OPENING                              1 e4 e5 2 Nf3 Nc6 3 g3

KOOLA-KOOLA                                                1 h4 a5

KOPAYEV V, RUY LOPEZ                                1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 c3 f5 6 ef Bxf5 7 O-O

KOPEC SYSTEM, SICILIAN                                            1 e4 c5 2 Nf3 d6 3 Bd3

KORCHNOI'S V, DUTCH                                 1 d4 f5 2 h3

KORCHNOI'S V, ENGLISH                                             1 c4 Nf6 2 Nc3 d5 3 cd Nxd5 4 Nf3 g6 5 g3 Bg7 6 Bg2 e5

KORN G; RICHTER G, BUDAPEST                 1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 Bf4 Nc6 5 Nf3 Bb4+ 6 Nc3 Bxc3+ 7 bc Qe7 8 Qd5 Qa3 9 Rc1 d6

KOSTIC GAMBIT, ITALIAN OPENING                         1 e4 e5 2 Nf3 Nc6 3 Bc4 Nd4

KOSTIC V, RUY LOPEZ                                    1 e4 e5 2 Nf3 Nc6 3 Bb5 f5 4 Nc3 Nf6 5 exf5 Bc5                             

KOTOV-ROBATSCH DEFENSE                        1 d4 g6 2 c4 Bg7

KOTRC O; HEINRICHSEN; DUNST; QN ATTACK       1 Nc3

KOTRC-MIESES GAMBIT, CENTER COUNTER          1 e4 d5 2 exd5 Qxd5 3 Nc3 Qa5 4 b4

KOTRCH-MIESES G; ROSEN G, CC                              1 e4 d5 2 exd5 Qxd5 3 Nc3 Qa5 4 b4

KRABBE G; BULLFROG G; WEIDENHAGEN G; OCHSENFROSCH G; POISONED SPIKE  1 d4 Nf6 2 g4

KRAUS-MUHLHERR COUNTERGAMBIT                    1 d4 Nf6 2 f3 d5 3 e4 e5 4 dxe5 Nxe4

KRAUSE ATTACK, SLAV                                  1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 Ne5

KRAUSE VARIATION, SICILIAN                     1 e4 c5 2 Nf3 Nf6 3 e5 Nd5 4 Nc3 e6 5 Nxd5 exd5 6 d4 Nc6

KRAZY KAT O; CRAZY CAT OPENING                          1 Nh3 e5 2 f3 d5 3 Nf2

KREJCIK GAMBIT                                                            1 e4 e5 2 f3 Nf6 3 Bc4 Bc5 4 Ne2 Nc6 5 b4

KREJCIK G; LISBON G, DUTCH                      1 d4 f5 2 g4

KREJCIK V, ALEKHINE                                     1 e4 Nf6 2 Bc4

KUPREICHIK V, CENTER                                1 e4 e5 2 d4 ed 3 Qxd4 Nc6 4 Qe3 Nf6 5 Nc3 Bb4 6 Bd2 O-O 7 O-O-O Re8 8 Bc4 d6 9 Nh3

KURAJICA D; AGINCOURT D, ENGLISH      1 c4 e6

LABAHN GAMBIT                                                           1 b4 d5 2 Bb2 d4 3 Nf3 c5

LAMB DEFENSE, BDG                                     1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Nc6

LANDAU V, SLAV                                             1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 e3 Bf5 5 cd cd 6 Qb3 Qc8 7 Bd2 e6 8 Na3

LANDSTRASSER GAMBIT; RETI; WOLF G:                 1 Nf3 d5 2 c4

LANGE ATTACK; MAX LANGE ATTACK, 2 KTS           1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 d4 exd4 5 O-O Bc5 6 e5

LANGE G; ALFRED LANGE GAMBIT                            1 d4 d5 2 e4 dxe4 3 Nc3 e5 4 Nxe4

LANGE V, EVANS GAMBIT                              1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bb6 5 b5 Na5 6 Nxe5 Nh6

LANGEHEINECKE V, BDG                                             1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 e3

LANGHELD GAMBIT, BIRD'S OPENING                     1 f4 e5 2 fxe5 d6 3 exd6 Nf6

LARSEN GAMBIT, DUTCH DEFENSE                           1 d4 f5 2 g3 g6 3 h4 Nf6 4 h5

LARSEN V, GRUNFELD                                   1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 cxd5 Nxd5 5 e4 Nxc3 6 bc Bg7 7 Bc4 O-O 8 Ne2 Qd7

LARSEN'S OPENING/QUEEN'S FIANCHETTO O   1 b3

LARSEN-BRONSTEIN V, CARO; NIMVOVICH V:  1 e4 c6 2 d4 d5 3 Nc3 de 4 Nxe4 Nf6 5 Nxf6+ gf

LARSEN-JANOWSKI V, QGA; MODERN V   1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 Bg4

LARSEN-SANTASIERE V, SICILIAN                              1 e4 c5 2 f4

LASKER D, EVANS GAMBIT                                   1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 d4 d6 7 O-O Bb6

LASKER TRAP, QGD                                        1 d4 d5 2 c4 e5 3 dxe5 d4 4 e3 Bb4+ 5 Bd2 dxe3

LASKER V, ALEKHINE                                      1 e4 Nf6 2 e5 Nd5 3 c3 Nb6 4 c5

LASKER V, PETROFF                                        1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 Nf3 Nxe4 5 Qe2

LASKER V, QGD                                               1 d4 d5 2 c4 d6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 h6 7 Bh4 Ne4 8 Bxe7 Qxe7

LASKER-PELIKAN V, SICILIAN                       1 e4 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e5

LASKER SIMUL SPECIAL                                 1 g3 h5

LATVIAN G; GRECO C-G; LETTISH;                             1 e4 e5 2 Nf3 f5 (LITHUANIAN)

LAZY KNIGHT V, SICILIAN                              1 e4 c5 2 Nf3 d6 3 d4 Nd7

LEIPZIG G; FAJAROWICZ D, BUDAPEST      1 d4 Nf6 2 c4 e5 3 dxe5 Ne4

LEMBERG G; TENNISON G;  RETI                               1 Nf3 d5 2 e4

LEMBERGER C-G, BDG                                  1 d4 d5 2 e4 dxe4 3 Nc3 e5

LEMMING                                                        1 e4 Na6

LENINGRAD V, DUTCH; DUTCH INDIAN    1 d4 f5 2 g3

LENINGRAD V, FRENCH                                1 e4 e6 2 d4 d5 3 Nd2 Nf6 4 e5 Nfd7 5 f4 c5 6 c3 Nc6 7 Ndf3 cd 8 cd Nb6        

LENINGRAD V, NIMZO-INDIAN                   1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Bg5

LENZERHEIDE V, RUY      see Flohr-Zaitsev variation

LEONHARDT V, EVANS GAMBIT                  1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 d4 b5

LEONHARDT V, LATVIAN GAMBIT                             1 e4 e5 2 Nf3 f5 3 Nxe5 Qf6 4 Nc4

LEONHARDT V, PONZIANI                                           1 e4 e5 2 Nf3 Nc6 3 c3 d5 4 Qa4 Nf6                                

LEONHARDT V, RUY, CLOSED:                     8 c3 Na5 9 Bc2 c5 10 d4 Qc7 11 h3 Nc6 12 d5 Nd8 13 Nbd2 g5

LEONHARDT V, SICILIAN                               1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 e6 6 Bc4 Nc6              

LESSER BISHOP'S G; TARTAKOWER G, KGA              1 e4 e5 2 f4 exf4 3 Be2

LESSER GIUOCO PIANO; HALF GIUOCO PIANO       1 e4 e5 2 Nf3 Nc6 3 Bc4 d6 (SEMI ITALIAN OPENING)

LESSING DEFENSE                                                         1 Nf3 Nc6

LETTISH G; LATVIAN G; GRECO C-G; LITHUANIAN  see Latvian G

LEVENFISH V, SICILIAN                                  1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 g6 6 f4

LEVENSTEIN D; QUEEN'S DEFENSE                           1 e4 e5 2 Nf3 Qe7

LEVITZKY V; VERESOV VARIATION, QGA   1 d4 d5 2 c4 dxc4 3 e4 f5

LEWIS COUNTER-GAMBIT, BISHOP                           1 e4 e5 2 Bc4 Bc5 3 c3 d5

LEWIS DEFENSE, ITALIAN                                            1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Qe7      

LEWIS G, BISHOP OPENING                                        1 e4 e5 2 Bc4 Bc5 3 d4

LICHTENHEIN C-A, KGA; COZIO DEFENSE 1 e4 e5 2 f4 exf4 3 Bc4 Nf6 (HANNEKEN D; PRUSSIAN D)

LICHTENHEIN DEFENSE, PETROFF                             1 e4 e5 2 Nf3 Nf6 3 Bc4 Nxe4 4 Nc3 d5    

LILIENFISCH V;FANTASY V, CARO KANN    1 e4 c6 2 d4 d5 3 f3

LINDER COUNTERGAMBIT                                          1 d4 Nf6 2 f3 e6 3 e4 Nxe4

LIPNITZKY V, SICILIAN                                   1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6 6 Bc4

LISBON G, DUTCH                                                         1 d4 f5 2 g4

LISITSIN G, RETI; POLISH GAMBIT                             1 Nf3 f5 2 e4

LITHUANIAN; LETTISH G; LATVIAN G; GRECO C-G  see Latvian G

LOCOCK V, PHILIDOR                                    1 e4 e5 2 Nf3 d6 3 d4 Nf6 4 Ng5 h6 5 Nxf7

LODZ V; SCHLECTER V; RUBINSTEIN V, QGD: 1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3

LOHN GAMBIT, ENGLISH                                             1 c4 d5 2 cxd5 e6

LOLLI ATTACK, 2 KNIGHTS                                           1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5 Nxd5 6 d4

LOLLI G, KGA                                                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Bxf7+

LOMAN DEFENSE, 2 KNIGHTS                      1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 d4 ed 5 O-O Bc5 6 e5 d5 7 ef dc 8 Re1+ Be6 9 Ng5 g6 

LONDON SYSTEM                                                          1 d4 d5 2 Nf3 Nf6 3 Bf4

LONDON V, KID                                                             1 d4 Nf6 2 Nf3 g6 3 Bf4 Bg7 4 Nbd2

LONDON V, RETI; NEW YORK VARIATION               1 Nf3 d5 2 c4 c6 3 b3 Nf6 4 Bg2 e6 5 Bb2 Nbd7

LOOSE G; HROMADKA DEFENSE                 1 d4 Nf6 2 c4 c5

LOPEZ COUNTER-GAMBIT, PHILIDOR                       1 e4 e5 2 Nf3 d6 3 Bc4 f5

LOPEZ DEFENSE, KGA                                    1 e4 e5 2 f4 exf4 3 Bc4 Nf6

LOPEZ FOUR KNIGHTS, RUY LOPEZ                           1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Nc3

LOPEZ G; BISHOP ; CALABRIAN C-G                           1 e4 e5 2 Bc4 f5

LOPEZ OPENING; RUY LOPEZ, SPANISH     1 e4 e5 2 Nf3 Nc6 3 Bb5

LOPEZ-GIANUTIO COUNTER-GAMBIT, KGA            1 e4 e5 2 f4 exf4 3 Bc4 f5

LORD V; HANHAM V, PHILIDOR                  1 e4 e5 2 Nf3 d6 3 d4 Nd7

LOUMA V, SICILIAN                                       1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Be2 e5 7 Nxc6

LOWENTHAL/BOURDONNAIS V, SICILIAN               1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 e5

LUCENA DEFENSE, RUY LOPEZ                    1 e4 e5 2 Nf3 Nc6 3 Bb5 Be7

LUNDIN CG; LUNDIN-BRONSTEIN CG, BENONI  1 d4 Nf6 2 c4 c5 3 d5 d6 4 Nc3 g6 5 e4 b5

LUNDIN DEFENSE                                                          1 d4 Nc6

LUNDIN V, QGD; NEO-MERAN                    1 d4 d5 2 c4 c6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 b4

LUTIKOV V, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 Bc2

LWOW G; TENNISON G, etc                                        1 Nf3 d5 2 e4 dxe4 3 Ng5

MACDONNELL G  see McDonnell G

MACHO GROB; BORG; BASMANIAC DEFENSE         1 e4 g5

MACLEOD DEFENSE                                                      d6, e6, Nd7, Ne7

MACLOPEZ; RELFSSON G; SCOTCH                            1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bb5

MAD DOG A, BDG                                           1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 ef 5 Nxf3 g6 6 Bc4 Bg7 7 h4

MAFIA D, KGD                                                 1 e4 e5 2 f4 c5

MAKOGONOV V, KID                                     1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 h3

MALKIN V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 dxe5

MANHATTAN D, QGD; WESTPHALIA D      1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Nbd7 5 e3 Bb4    

MANHATTAN G, DUTCH                                              1 d4 f5 2 Qd3 d5 3 g4

MANHATTAN;ULVESTAD V; ALAPIN V, DUTCH       1 d4 f5 2 Qd3

MANNHEIM V, QGA                                       1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 Qa4+

MAO TSE-TUNG ATTACK                               1 e4 f5 2 exf5 Kf7 3 Qh5 g6 4 fxg6 Kg7 5 gxh7 Rxh7 6 Qg5

MARXER GAMBIT, CARO KANN                1.e4 c6 2.d4 d5 3.c3

MARECHALL V, QGD-SLAV                                           1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 e3 Na6

MARGATE V, SICILIAN                                   1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5 e6 7 Bb5

MARIENBAD V, QID                                       1 d4 Nf6 2 Nf3 b6 3 g3 Bb7 4 Bg2 c5

MARIENBAD V, SICILIAN                               1 e4 c5 2 b4 cxb4 3 a3 d5 4 exd5 Qxd5 5 Bb2

MAROCZY BIND, SICILIAN                                           1 e4 c5 2 Nf3 Nc6 3 dd4 cxd4 4 Nxd4 g6 5 c4

MAROCZY GAMBIT                                                        1 e4 e5 2 Nf3 d5 3 exd5 Bd6

MAROCZY V, 4 KNIGHTS                               1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 3 Bb5 Bb4 5 O-O O-O 6 d3 d6 7 Ne2

MARSHALL ATTACK, KGD                                             1 e4 e5 2 f4 Bc5 3 Nf3 d6 4 c3 Bg4 5 fxe5 dxe5 6 Qa4+

MARSHALL COUNTER ATTACK, RUY LOPEZ             1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 O-O 8 c3 d5 9 d4

MARSHALL D, QGD; KNIGHT DEFENSE                      1 d4 d5 2 c4 Nf6

MARSAHLL G, NIMZOVICH DEFENSE                         1 e4 Nc6 2 d4 d5 3 exd5 Qxd5 4 Nc3

MARSHALL G, QGD                                         1 d4 d5 2 c4 e6 3 Nc3 c6 4 e4

MARSHALL G, CENTER COUNTER                             1 e4 d5 2 exd5 Nf6          

MARSHALL G; SWEDISH V, QGD; FOLKSTONE V     1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3 c4

MARSHALL V, 2 KNIGHTS                                             1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 d4 ed 5 O-O Bc5 6 e5 d5 7 ef dc 8 Re1+ Be7 9 Ng5 Qd5 10 Nc3 Qf5 11 Nce4

MARSHALL V, FRENCH                                  1 e4 e6 2 d4 d5 3 Nc3 c5

MARSHALL V, SICILIAN                                  1 e4 c5 2 Nf3 e6 3 d4 d5

MARSHALL V, SICILIAN WING                      1 e4 c5 2 b4 cxb4 3 a3

MASON G; KERES G; PARNAU G, KGA                       1 e4 e5 2 f4 exf4 3 Nc3

MATOVINSKI GAMBIT, OWEN'S DEFENSE               1 e4 b6 2 d4 Bb7 3 Bd3 f5

MATULOVIC G; SMITH-MORRA GAMBIT                  1 e4 c5 2 d4

MAX LANGE ATTACK, 2 KNIGHTS                1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 d4 ed 5 O-O Bc5 6 e5

MCCUTCHEON V, FRENCH                                          1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Bb4

MCDONNELL ATTACK, KGA                                         1 e4 e5 2 f4 exf4 3 Bc4 Qh4+ 4 Kf1 g5 5 Nc3 Bg7 6 g3

MCDONNELL DOUBLE GAMBIT, BISHOP 1 e4 e5 2 Bc4 Bc5 3 b4 Bxb4 4 f4

MCDONNELL GAMBIT, KGA                                        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Nc3

MEADOW HAY; WARE; CRAB                                      1 a4

MEITNER GAMBIT, VIENNA OPENING                      1 e4 e5 2 Nc3 Bc5 3 Na4 Bxf2+

MEITNER V, SCOTCH                                     1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Be3 Qf6 6 c3 Nge7 7 Nc2

MENGARINI OPENING                                  1 e4 e5 2 a3

MENGARINI O, VIENNA                               1 e4 e5 2 Nc3 Nf6 3 a3

MENGARINI V, KID                                         1 d4 Nf6 2 c4 g6 3 Qc2

MERAN V, QGD                                               1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4

MESTEL V, ITALIAN                                        1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Qe7 5 d4 Bb6 6 Bg5

METGER V, 4 KTS; METGER UNPIN V         1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4 5 O-O O-O 6 d3 d6 7 Bg5 Bxc3 8 bc Qe7 9 Re1 Nd8 10 d4 Ne6 

MIDDLETON C-G, KGA                                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 d6 5 O-O Bg4 6 h3 h5 7 hxg4

MIESES DEFENSE; NIMZOVICH D, BDG      1 d4 d5 2 e4 dxe4 3 f3 Nc6

MIESES GAMBIT, CENTER-COUNTER                        1 e4 d5 2 exd5 Qxd5 3 Nc3 Qa5 4 b4

MIESES O; VALENCIA O; VENEZUELAN O  1 d3

MIESES V, SCOTCH                                         1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Nf6 5 Nxc6

MIKENAS A, NIMZO-INDIAN                        1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qd3

MIKENAS V, BENONI                                     1 d4 Nf6 2 c4 c5 3 d5 e6 4 Nc3 ed 5 cd d6 6 e4 g6 7 f4 Bg7 8 e5

MIKENAS-VAN GEET D; BOGOLYUBOV O  1 d4 Nc6

MILNER-BARRY G, CARO KANN                  1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 f3

MILNER-BARRY G, ADVANCE FRENCH                      1 e4 e6 2 d4 d5 3 e5 c5 4 c3 Nc6 5 Nf3 Qb6 6 Bd3 cd 7 cd Bd7 8 O-O Nxd4 9 Nxd4 Qxd4 10 Nc3             

MILNER-BARRY V, NIMZO; ZURICH V        1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 Nc6

MINCKWITZ V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O Nxe4 5 d4 Be7 6 dxe5

MINCKWITZ-FRASER V, VIENNA                 1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 d4 Qh4 5 Ke2 b6

MODERN BENONI                                                         1 d4 Nf6 2 c4 c5 3 d5 e6 4 Nc3 exd5 5 cxd5 d6

MODERN D; ROBATSCH D; PIRC-ROBATSCH           1 e4 g6

MODERN MAIN LINE, GRUNFELD                             1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 cd Nxd5 5 e4 Nxc3 6 bc Bg7 7 Nf3

MODERN PAULSEN, SICILIAN                      1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e6 6 Be2 a6

MODERN STEINITZ D, RUY LOPEZ                             1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6

MODERN V, CARO; ENGLISH V                    1 e4 c6 2 c4

MODERN V, ENGLISH; SMYSLOV-KAPENGUT V:     1 c4 e5 2 Nc3 Nf6 3 g3 Bb4

MODERN V, KGA                                                            1 e4 e5 2 f4 exf4 3 Nf3 d5 4 exd5 Nf6

MODERN V, QGA; JANOWSKI-LARSEN V  1 d4 d5 2 c4 dc 3 Nf3 Nf6 4 e3 Bg4

MOELLER ATTACK, ITALIAN                                        1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 c3 Nf6 5 d4 ed 6 cd Bb4+ 7 Nc3 Nxe4 8 O-O Bxc3 9 d5

MOELLER V, RUY LOPEZ                               1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Bc5

MOKELE MBEMBE, ALEKHINE                                    1 e4 Nf6 2 e5 Ne4

MONGREDIEN DEFENSE                               1 e4 g6 2 d4 Bg7 3 Nf3 b6

MONKEY'S BUM                                                            1 e4 g6 2 Bc4 Bg7 3 Qf3 e6 4 d4

MONTICELLI TRAP, BOGO-INDIAN                            1 d4 Nf6 2 c4 e6 3 Nf3 Bb4+ 4 Bd2 Bxd2+ 5 Qxd2 b6 6 g3 Bb7 7 Bg2 O-O 8 Nc3 Ne4 9 Qc2 Nxc3 10 Ng5

MORPHY ATTACK, EVANS GAMBIT                            1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 ed 7 O-O d6 8 cd Bb6 9 Nc3

MORPHY D, BLEDOW V, KGA                                      1 e4 e5 2 f4 exf4 3 Bc4 d5

MORPHY D, RUY LOPEZ                                1 e4 e5 2 Nf3 Nc6 3 Bb5 a6

MORPHY GAMBIT; SMITH-MORRA                            1 e4 c5 2 d4 cxd4 3 c3

MORPHY V; KIESERITZKY ATTACK, 2 KTS   1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5 Na5 6 d3

MORRA GAMBIT, SIC; SMITH-MORRA;      1 e4 c5 2 d4 (FLEISSEG; MATULOVIC; MORPHY; RIVADAVIA)

MORTIMER TRAP, RUY LOPEZ                     1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 d3 Ne7 5 Nxe5 c6

MORTIMER V, RUY LOPEZ                                           1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 d3 Ne7

MOSCOW V, RUY; HOWELL ATTACK; KERES V; ESTONAIN V  see Howell Attack

MOSCOW V, SICILIAN                                   1 e4 c5 2 Nf3 d6 3 Bb5+

MOSCOW V, SICILIAN                                   1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 f3

MOTZKO V, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 dxe5 Be6 9 c3 Bc5 10 Qd3

MUHLHERR-KRAUS COUNTERGAMBIT                    1 d4 Nf6 2 f3 d5 3 e4 e5 4 dxe5 Nxe4

MUJANNAH VARIATION, BIRD                    1 f4 d5 2 c4

MUZIO-POLERIO GAMBIT, KGA                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O

MYERS DEFENSE                                                            1 c4 g5

NACHMANSON G, 2 KNIGHTS                                     1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 d4 ed 5 O-O Nxe4 6 Nc3

NAJDORF V, SICILIAN                                    1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6

NAPOLEON OPENING                                    1 e4 e5 2 Qf3

NASELWAUS V, OWEN                                  1 e4 b6 2 d4 Bb7 3 Bg5

NENAROKOV V, RUY LOPEZ                                        1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 dxe5 Be6 9 c3 Bc5 10 Qd3 Ne7

NEO-CATALAN OPENING, RETI                   1 Nf3 d5 2 c4 e6 3 g3

NEO-CUNNINGHAM GAMBIT                                     1 e4 e5 2 f4 exf4 3 Nf3 Be7 4 Bc4 Nf6

NEO-INDIAN ATTACK                                    1 d4 Nf6 2 c4 e6 3 Bg5

NEO-MEARAN, QGD; LUNDIN VARIATION              see Lundin V

NEO-MONGOLOID DEFENSE                                      1 e4 Nc6 2 d4 f6

NEO-ORTHODOX V, QGD                                             1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 h6                                                

NEUMANN DEFENSE, KGA                                          1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Nc6

NEW CARO-KANN                                                         1 e4 c6 2 d4 d5 3 Nd2 g6

NEW YORK V, RETI; LONDON VARIATION               1 Nf3 d5 2 c4 c6 3 b3 Nf6 4 Bg2 e6 5 Bb2 Nbd7     

NIMZO-INDIAN DEFENSE                                            1 d4 Nf6 2 c4 e6 3 Nc3

NIMZO-QUEEN'S HYBRID                                            1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 Nc3

NIMZOVICH DEFENSE                                    1 e4 Nc6

NIMZOVICH OPENING, RETI                        1 Nf3 d5 2 b3

NIMZOVICH QUEEN'S PAWN DEFENSE     1 d4 Nc6

NIMZOVICH V, BDG                                       1 d4 d5 2 e4 dxe4 3 Nc3 Nc6

NIMZOVICH V, CARO; BRONSTEIN-LARSEN V         see Bronstein-Larsen V

NIMZOVICH V, DUTCH                                  1 d4 f5 2 e4 fxe4 3 Nc3 Nf6 4 Bg5 b6

NIMZOVICH V, FR; STEINITZ V                     1 e4 e6 2 d4 d5 3 e5

NIMZOVICH V, KGD                                        1 e4 e5 2 f4 d5 3 exd5 e4 4 Bb5+

NIMZOVICH V, KGD                                        1 e4 e5 2 f4 d5 3 exd5 c6

NIMZOVICH V, QID                                        1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 g3 Ba6

NIMZOVICH V, RUY; TARRASCH                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 Nc3

NIMZOVICH V, SICILIAN                                1 e4 c5 2 Nf3 Nc6 3 d4 cxd4 4 Nxd4 d5

NIMZOVICH V, SIC; RUBINSTEIN V                            1 e4 c5 2 Nf3 Nf6

NOA V, NIMZO-INDIAN                                 1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 d5

NOAH'S ARK TRAP, RUY                                3 Bb5 a6 4 Ba4 d6 5 d4 b5 6 Bb3 ed 7 Nxd4 Nxd4 8 Qxd4 c5 9 Qd5 Be6 10 Qc6+ Bd7 11 Qd5 c4

NORDWALDER GAMBIT                                1 e4 e5 2 c3 d5 3 Qh5

NORWALDER V; BUCKER V, KGD                               1 e4 e5 2 f4 Qf6

NORMAL POSITION, EVANS GAMBIT                        1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 ed 7 O-O d6 8 cd Bb6

NORMAL POSITION, QGD; RUBINSTEIN  1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3 Nf6 7 Bg2 Be7 8 O-O O-O

NORRIS GAMBIT                                             1 d4 d5 2 Bf4 c5 3 e4

NOTTINGHAM V, SICILIAN                                          1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 g6 6 Be3 Bg7 7 Be2 Nc6 8 Nb3

NOVOSIBIRSK VARIATION                                           1 Nc3 c5 2 d4 cxd4 3 Qxd4 Nc6 4 Qh4

NUREMBERG DEFENSE, RUY LOPEZ                          1 e4 e5 2 Nf3 Nc6 3 Bb5 f6

NYHOLM ATTACK, RUY LOPEZ                     1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 d4 exd4 5 O-O

O'KELLY V, BDG                                               1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 c6

O'KELLY V, SICILIAN                                       1 e4 c5 2 Nf3 a6

OBERNDORFER GAMBIT                               1 Nf3 g5

OCHSENFROSCH G; BULLFROG G; WEIDENHAGEN G; KRABBE G; POISONED SPIKE  1 d4 Nf6 2 g4

OLD INDIAN ATTACK                                     1 Nf3 d5 2 d3

OLD INDIAN DEFENSE; CHIGORIN INDIAN              1 d4 Nf6 2 c4 d6

OLD MERAN, QGD                                                         1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dxc4 7 Bxc4 b5 8 Bd3 a6 9 O-O

OLD STEINITZ DEFENSE, RUY; STEINITZ D               1 e4 e5 2 Nf3 Nc6 3 Bb5 d6

OLIVEIRA GAMBIT                                                         1 g4 f5

OLSON GAMBIT                                              1 e4 e5 2 Nf3 Nc6 3 Bc4 Nd4 4 Nxe5 Qg5

OPATIJAV, PIRC; PANOV                               1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 Bg5

OPEN SLAV D; CZECH DEFENSE                   1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5

OPEN V; TARRASCH V, RUY LOPEZ                            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4

OPOCENSKY G; BENKO G; VOLGA GAMBIT              1 d4 Nf6 2 c4 c5 3 d5 b5

OPOCENSKY O; TROMPOVSKY O; RUTH OPENING               1 d4 Nf6 2 Bg5

OPOCENSKY V, GRUNFELD                                          1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 e3 O-O 6 Bd2

OPOCENSKY V, SICILIAN                               1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 a6 6 Be2 e5

ORANG-UTAN; HUNT O; POLISH; SOKOLSKY          1 b4

ORSINI GAMBIT, KGA                                    1 e4 e5 2 f4 exf4 3 b3

ORTHODOX V, QGD                                                      1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7

ORTHOSCHAPP, FRENCH                                             1 e4 e6 2 c4 d5 3 cxd5 exd5 4 Qb3

OUROUSSOFF G; KEIDANSKY G; URUSOV G            1 e4 e5 2 Bc4 Nf6 3 d4 exd4 4 Nf3

OWEN D; QUEEN'S FIANCHETTO; GREEK D;           1 e4 b6 (IL FIANCHETTO DI DONNA)

OXFORD V, VIENNA                                       1 e4 e5 2 Nc3 Nf6 3 f4 d5 4 fxe5 Nxe4 5 d3

OZOL V, DUTCH                                              1 d4 f5 2 c4 Nf6 3 Nc3 g6 4 Nf3 Bg7 5 Bg5

PACHMAN V, GRUNFELD                                             1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 e3 O-O 6 Qb3 dc 7 Bxc4 Nbd7 9 Ng5

PALEFACE ATTACK                                          1 d4 Nf6 2 f3

PANNO V, KID                                                 1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 Nf3 d6 5 g3 O-O 6 Bg2 Nc6 7 O-O a6      

PANOV V, SIC; KERES V:                                1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e6 6 g4

PANOV-BOTVINNIK ATTACK, CARO KANN               1 e4 c6 2 d4 d5 3 exd5 cxd5 4 c4

PANOV; OPATIJA V, PIRC                              1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 Bg5

PARIS GAMBIT; AMAR GAMBIT                   1 Nh3 d5 2 g3 e5 3 f4 Bxh3 4 Bxh3 exf4 5 O-O

PARIS OPENING                                                             1 Nh3

PARISER GAMBIT, BISHOP'S OPENING      1 e4 e5 2 Bc4 b5 3 Bxb5 f5

PARISIAN O; VERESOV V; BETBEDER;        1 d4 d5 2 Nc3 Nf6 3 Bg5 (LEVITZKY)

PARMA-KERES SYSTEM, ENGLISH                              1 c4 c5 2 Nc3 Nf6 3 Nf3 e6 4 g3 Nc6

PAULSEN ATTACK, FRENCH                                         1 e4 e6 2 d4 d5 3 e5 c5 4 c3 Nc6 5 Nf3

PAULSEN ATTACK, PHILIDOR                       1 e4 e5 2 Nf3 d6 3 d4 ed 4 Nxd4 d5 5 ed

PAULSEN ATTACK, SCOTCH                          1 e4 e5 2 Nf3 NC6 3 d4 ed 4 Nxd4 Bc5 5 Be3 Qf6 6 c3 Nge7 7 Bb5

PAULSEN COUNTERGAMBIT                                       1 e4 e5 2 Nf3 d5 3 exd5 e4

PAULSEN DEFENSE, KGA                               1 e4 e5 2 f4 ef 3 Nf3 g5 4 h4 g4 5 Ne5 Bg7

PAULSEN V, 4 KNIGHTS                                 1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4 5 O-O O-O 6 Bxc6

PAULSEN V, EVANS GAMBIT                                       1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 ed 7 O-O d6 8 cd Bb6 9 d5 Na5 10 Bb2 Ne7

PAULSEN V, SCOTCH; ANDERSSEN C-A     1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bc4 Bc5 5 O-O d6 6 c3 Bg4

PAULSEN V, SICILIAN                                     1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nc6 5 Nc3 Nc6 6 Ndb5 Bb4

PAULSEN V, SIC; KAN VARIATION                              1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 a6                                                            

PAULSEN V, VIENNA                                      1 e4 e5 2 Nc3, 3 g3

PAWN PUSH, RUY-MARSHALL                                    9 exd5 Nxd5 10 Nxe5 Nxe5 11 Rxe5 c6 12 d4 Bd6 13 Re1 Qh4 14 g3 Qh3 15 Be3 Bg4 16 Qd3 f5

PAWN-STORM V, BENONI                                           1 d4 Nf6 2 c4 c5 3 d5 e6 4 Nc3 ed 5 cd d6 6 e4 g6 7 f4

PAWN THRUST ATTACK, BIRD                     1 f4 Nf6 2 b4

PELIKAN V, FRENCH                                       1 e4 e6 2 Nc3 d5 3 f4

PELIKAN V, SICILIAN                                      1 e4 c5 2 Nf3 Nc6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 e5 6 Ndb5 d6

PETERS A, BDG                                                1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 g6 6 Ne5

PETERS-GIERTZ GAMBIT                               1 d4 d5 2 e4 dxe4 3 Nc3 e6 4 f3

PETROFF DEFENSE; PETROV; RUSSIAN D 1 e4 e5 2 Nf3 Nf6

PETROSIAN V, FRENCH                                 1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 e5 Qd7

PETROSIAN V, KID                                          1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Be2 e5 7 d5

PETROSIAN V, QGD; ALATORTSEV VARIATION       1 d4 d5 2 c4 e6 3 Nc3 Be7

PETROSIAN V, QID                                         1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 a3

PETROV  SEE PETROFF

PFEIFER GAMBIT                                                            1 Nc3 d5 2 f4 d4 3 Ne4 e5

PFRANG G, BDG                                                             1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 e6 5 fxe4 Bb4 6 Bd3 Bxc3+ 7 bxc3 Nxe4 8 Be3

PHILIDOR COUNTER-GAMBIT                                    1 e4 e5 2 Nf3 d6 3 d4 f5

PHILIDOR DEFENSE                                        1 e4 e5 2 Nf3 d6

PHILIDOR GAMBIT                                                        1 e4 e5 2 Nf3 d6 3 d4 f5

PHILIDOR GAMBIT, KGA                                1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 Bg7 5 h4

PHILIDOR V, BISHOP                                      1 e4 e5 2 Bc4 Bc5 3 c3

PICKERING DEFENSE                                      1 e4 h5

PICKLEPUSS                              1.e4 h5 2.d4 Nf6

PIERCE G, VIENNA                                          1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 Nf3 g5 5 d4

PIETROWSKY V, BDG                                     1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 Nc6

PILLSBURY DEFENSE                                      1 d4 d6

PILLSBURY V, 4 KNIGHTS                                             1 e4 e5 2 Nf3 Nc6 4 Bb5 Bb4 5 O-O O-O 6 d3 d6 7 Bg5 Ne7

PILLSBURY V, QGD                                         1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 b6 8 cd ed 9 Bd3

PILLSBURY V; CAMBRIDGE SPRINGS, QGD              see Cambridge Springs

PILNIK V, RUY LOPEZ                                     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 d3      

PIN V, SIC; SICILIAN COUNTERATTACK     1 e4 c5 2 Nf3 e6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Bb4

PITTSBURGH V, QGD                                     1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 Nbd7 6 Nf3 b6 7 cd ed 8 Bb5

PIRC DEFENSE; ANTAL D; UFIMTSEV D      1 e4 d6 2 d4 Nf6 3 Nc3 g6

PIRC V, NIMZO-INDIAN                                 1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 c5 5 dxc5 O-O

PIRC V, QGD                                                    1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 a6 9 e4 b4

PIRC-LISITSIN G; POLISH G; DALESIO G     1 Nf3 f5 2 e4 fxe4 3 Ng5

PLATZ GAMBIT, BIRD (FROM GAMBIT)      1 f4 e5 2 fxe5 Nc6

PODEBRADY V, SICILIAN                               1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5 e6 7 Nb3                                                               

POHLMANN VARIATION, BDG                                    1 d4 d5 2 e4 dxe4 3 f3 f5

POISONED PAWN V, SICILIAN                     1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 a6 6 Bg5 e6 7 f4 Qb6 8 Qd2

POISONED SPIKE; BULLFROG G; WEIDENHAGEN G; KRABBE G; OCHSENFROSCH G  1 d4 Nf6 2 g4

POLERIO GAMBIT; WILLEMSON G, KGA    1 e4 e5 2 f4 exf4 3 d4

POLERIO-MUZIO GAMBIT, KGA                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 O-O

POLISH ATTACK; IRISH ATTACK                   1 Nc3 e5 2 f4

POLISH ATTACK, BDG                                    1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 Bg5

POLISH DEFENSE                                            1 d4 b5

POLISH G, BDG                                                1 d4 d5 2 e4 dxe4 3 Nc3

POLISH G; DALESIO G; PIRC-LISITSIN G     1 Nf3 f5 2 e4 fxe4 3 Ng5

POLISH OPENING                                                          1 b4

POLISH SPIKE                                                   1 b4 Nf6 2 Bb2 g6 3 g4

POLLOCK V, FRENCH                                     1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7 7 Qg4

POLUGAEVSKY V, SICILIAN                                          1 e4 c5 2 Nf3 e6 3 d4 cd 4 Nxd4 a6 5 Bd3 Bc5

POLUGAEVSKY V; ACCELERATED NAJDORF, SIC 1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 a6 6 Bg5 e6 7 f4 b5

PONZIANI CENTER GAMBIT, BISHOP                        1 e4 e5 2 Bc4 Nf6 3 d4

PONZIANI COUNTER-GAMBIT                     1 e4 e5 2 Nf3 Nc6 3 c3 f5

PONZIANI GAMBIT, 2 KNIGHTS                   1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 Nxe4

PONZIANI;ENGLISH KNIGHTS O; STAUNTON O      1 e4 e5 2 Nf3 Nc6 3 c3

PONZIANI V; CHIGORIN V, QP                     1 d4 d5 2 Nc3

PORK CHOP OPENING; HAMMERSCHLAG                1 f3 e5 2 Kf2

PORTLAND A, SICILIAN                                 1 e4 c5 2 Nc3 Nc6 3 d3 g6 4 g4

PORTUGUESE; VIENNA; HERZFELD D, KGA     1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 Nc6

POTTER V, SCOTCH                          1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Nb3

POZAREK GAMBIT                                                         1 d4 Nc6 2 c4 e5 3 dxe5 Nxe5 4 Nc3 Nxc4

PRAGUE V, QGA                                              1 d4 d5 2 c4 e6 3 Nc3 c5 4 cxd5 exd5 5 Nf3 Nc6 6 g3 Nf6

PRETZEL G, DUTCH                                        1 d4 f5 2 Qd3, 3 g4

PRINS V, GRUNFELD                                      1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dxc4 6 Qxc4 O-O 7 e4 Na6

PROKOFIEV G, BIRD                                       1 f4 d5 2 e4 dxe4 3 d3

PROVINCIAL OPENING, 4 KNIGHTS                    1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 a3 d6 5 h3

PRUSSIAN D, KGA; COZIO D; HANNEKEN D; LICHTENHEIN C-A  1 e4 e5 2 f4 exf4 3 Bc4 Nf6

PRUSSIAN GAME                                            1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5

PSEUDO-DIEMER GAMBIT                    1 Nc3 d5 2 e4 dxe4 3 f3 exf3 4 Qxf3

PSEUDO-MARSHALL V, RUY LOPEZ                           3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 Bb7 8 c3 d5 9 ed Nxd5 10 Nxe5 Nxe5 11 Rxe5 Nf4

PSEUDO-MERAN, QGD; SEMI-SLAV                           1 d4 d5 2 c4 e6 3 Nf3 Nf6 4 e3 c6

PTERODACTYL                                                 1 e4 g6 2 d4 Bg7 3 Nc3 c5

PULLING COUNTER-ATTACK, SCOTCH                     1 e4 e5 2 Nf3 Nc6 3 d4 ed 4 Nxd4 Qh4

PURCHAS G; SOLLER GAMBIT                      1 d4 e5 2 dxe5 f6

PYTEL VARIATION, CENTER COUNTER                     1 e4 d5 2 exd5 Qxd5 3 Nc3 Qd6

QUAADE G, KGA; QUAADA; QUADE G ; QUAADE-SCHMID G; TAYLOR  1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Nc3

QUEEN PAWN OPENING                                             1 d4

QUEEN'S BISHOP OPENING                                        1 d4 d5 2 Nf3 Nf6 3 Bf4

QUEEN'S D; LEVENSTEIN DEFENSE                           1 e4 e5 2 Nf3 Qe7

QUEEN'S EXCURSION; DANVERS OPENING             1 e4 e5 2 Qh5

QUEEN'S FIANCHETTO D; OWEN D; GREEK D         1 e4 b6

QUEEN'S FIANCHETTO OPENING/LARSEN              1 b3

QUEEN'S GAMBIT ACCEPTED                      1 d4 d5 2 c4 dxc4

QUEEN'S GAMBIT DECLINED                       1 d4 d5 2 c4 without 2...dxc4

QUEEN'S GAMBIT REVERSED                                      1 d4 d5 2 Nf3 c5

QUEEN'S GAMBIT; ALEPPO GAMBIT                         1 d4 d5 2 c4

QUEEN'S INDIAN DEFENSE                                         1 d4 Nf6 2 c4 b6

QUEEN'S INDIAN DEFENSE                                         1 d4 Nf6 2 c4 e6 3 Nf3 b6

QUEEN'S KNIGHT ATTACK; DUNST;                           1 Nc3 (HEINRICHSEN)

QUEEN'S KNIGHT OPENING; ST. GEORGE D            1 Nc3

QUEEN'S KNIGHT OPENING; VIENNA                       1 e4 e5 2 Nc3

QUEEN'S PAWN COUNTER-GAMBIT                         1 e4 e5 2 Nf3 d5

QUEEN'S SLAV D; SLAV DEFENSE                1 d4 d5 2 c4 c6

QUIMBY SYSTEM, ENGLISH OPENING          1.c4 d5

QUINTEROS V, SICILIAN                                              1 e4 c5 2 Nf3 Qc7

RAGOZIN V, NIMZO-INDIAN                                       1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3 Nc6 5 Nf3 O-O 6 Bd3 d5 7 O-O dxc4

RAGOZIN V, QGD                                                           1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 Bb4

RANDSPRINGER V, MODERN                       1 d4 d6 2 c4 g6 3 Nc3 Bg7 4 e4 f5

RANKEN V, 4 KNIGHTS                                  1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 a6 5 Bxc6

RASA-STUDIER G, FRENCH                                          1 e4 e6 2 d4 d5 3 Nc3 dxe4 4 Be3

RASA-STUDIER V, BDG                                  1 d4 d5 2 e4 dxe4 3 Nc3 e6 4 Be3

RAT DEFENSE                                                  1...g6

RAT OPENING; KING'S FIANCHETTO; BENKO; BILEK; BARCZAY; HUNGARIAN A  1 g3

RAUZER V, RUY, CLOSED                                             9 h3 Na5 10 Bc2 c5 11 d4 Qc7 12 Nbd2 Nc6 13 de de 14 a4

RAUZER V, SICILIAN                                       1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5 e6 7 Qd2

RAUZER V, SIC; RICHTER-RAUZER                             1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5

REGAN VARIATION                                                       1 g3 d5 2 Bg2 e5 3 d4

RELFSSON GAMBIT, SCOTCH; MACLOPEZ                1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bb5

REQUENA G; KERES G, KGA                                         1 e4 e5 2 f4 exf4 3 Nc3 Qh4+ 4 Ke2

RESHEVSKY V, NIMZO-INDIAN DEFENSE   1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3 O-O 5 Ne2 d5 6 a3

RETI GAMBIT ACCEPTED                                              1 Nf3 d5 2 c4 dxc4

RETI ;WOLF GAMBIT; LANDSTRASSER GAMBIT      1 Nf3 d5 2 c4

RETI OPENING; ZUKERTORT                                      1 Nf3

RETI POLONAISE                                             1 Nf3 d5 2 c4 d4 3 b4

RETI V, FRENCH                                              1 e4 e6 2 b3

RETI V, KGD                                                     1 e4 e5 2 f4 d5 3 exd5 e4 4 d3

RETI V, QGD                                                     1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3 Nf6 7 Bg2 Be7 8 O-O O-O 9 dc Bxc5 10 Na4

RETREAT V; BROOKLYN D, ALEKHINE        1 e4 Nf6 2 e5 Ng8

RETREAT V, RUY CLOSED; BREYER V                         9 h3 Nb8

REUTER GAMBIT, FRENCH                   1 e4 e6 2 f4 d5 3 Nf3 dxe4 4 Ng5

REVERSED BENONI; WING BLUMENFELD, RETI     1 Nf3 d5 2 c4 d4

REVERSED PHILIDOR, FRENCH                    1 e4 e6 2 d3 d5 3 Nd2 Nf6 4 Ngf3 Nc6 5 Be2

REYNOLDS V, QGD                                                        1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 a6

RICE GAMBIT, KGA                                         1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Nf6 6 Bc4 d5 7 ed Bd6 8 O-O

RICHARDSON ATTACK, EVANS                     1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 O-O Nf6 7 d4 O-O 8 Nxe5

RICHTER ATTACK, SIC; RICHTER RAUZER  1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5

RICHTER G; KORN G, BUDAPEST         1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 Bf4 Nc6 5 Nf3 Bb4+ 6 Nc3 Bxc3+ 7 bc Qe7 8 Qd5 Qa3 9 Rc1 d6

RICHTER V, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 Bxc6+ bxc6 6 d4

RICHTER V, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 d5

RICHTER-RAUZER ATTACK, SICILIAN                         1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5

RICHTER-VERESOV OPENING                      1 d4 d5 2 Nc3 Nf6 3 Bg5

RIGA V, RUY LOPEZ                                        1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 exd4

RIO DE JANERIO V; BERLIN V, RUY    see Berlin V

RITTENHOUSE GAMBIT, DUTCH DEFENSE               1 d4 f5 2 c4 Nf6 3 Nc3 e5

RITTER D, BDG                                                1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 b6

RIUMIN V, QID                                                1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 g3 Bb7 5 Bg2 Bb4+ 6 Bd2 Be7

RIVADAVIA G; SMITH-MORRA                     1 e4 c5 2 d4 cd 3 c3

RIVIERE OPENING; DUTCH D; STEIN D;     1 d4 f5

RIVIERE V, KGA                                               1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Nf6 6 Nxg4 d5

ROBATSCH D; MODERN D; PIRC-ROBATSCH;          1 e4 g6 (YUGOSLAV D)

ROMANISHIN V, ENGLISH                                           1 c4 e5 2 Nc3 Nc6 3 Nf3 Nf6 4 e3 Bb4 5 Qc2 Bxc3

ROMANISHIN V, NIMZO-INDIAN         1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 g3

ROMANISHIN V, SCOTCH                                            1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Bc5 5 Nb3 Bb4+

ROMANISHIN'S LINE, RUY-CLOSED                           9 h3 Nb8 10 d4 Nbd7 11 Nbd2 Bb7 12 Bc2 Re8 13 Nf1 Bf8 14 Bg5

ROMANOVSKY V, RUY LOPEZ                                     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 d6 7 c3 O-O 8 d4 Bd7 9 Nbd2 ed 10 cd Nb4                   

ROMFORD COUNTER-GAMBIT, GROB                      1 g4 d5 2 Bg2 Bxg4 3 c4 d4

ROMI V, QGD                                                  1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 Bb4

ROSCHER GAMBIT                                                         1 e4 d6 2 d4 Nf6 3 Nf3

ROSEN G; KOTRCH-MIESES G, CC                              1 e4 d5 2 exd5 Qxd5 3 Nc3 Qa5 4 b4

ROSENTHAL V, KGA                                        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Qe7

ROSENTRETER G, KGA                                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 d4

ROSS GAMBIT                                                  1 Nf3 e5

ROSSOLIMO V, MODERN                                             1 d4 g6 2 c4 Bg7 3 e4 d6 4 Nf3 Bg4

ROSSOLIMO V, SICILIAN                               1 e4 c5 2 Nf3 Nc6 3 Bb5

ROTARY-ALBERNY GAMBIT, RUY LOPEZ   1 e4 e5 2 Nf3 Nc6 3 Bb5 b6

ROTTERDAM V, SLAV                                     1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 e3 Bf5 5 cd cd 6 Qb3

ROUSSEAU GAMBIT                                       1 e4 e5 2 Nf3 Nc6 3 Bc4 f5

ROYAL OPENING; KING'S PAWN OPENING              1 e4

RUBINSTEIN ATTACK, COLLE                       1 d4 d5 2 Nf3 Nf6 3 e3 e6 4 Bd3 c5 5 b3

RUBINSTEIN ATTACK, QGD; HARRWITZ A 1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bf4

RUBINSTEIN GAMBIT, 4 KNIGHTS                             1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Nd4 5 Ba4 Bc5

RUBINSTEIN V, 4 KNIGHTS                                          1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Nd4

RUBINSTEIN V, ENGLISH                                             1 c4 c5 2 Nc3 Nf6 3 g3 d5 4 cd Nxd5 5 Bg2 Nc7

RUBINSTEIN V, FRENCH                               1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7 7 Qd2

RUBINSTEIN V, FRENCH                               1 e4 e6 2 d4 d5 3 Nc3 dxe4

RUBINSTEIN V, NIMZO-INDIAN                  1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3

RUBINSTEIN V, QGA                                      1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 e6 5 Bxc4 c5 6 O-O a6 7 a4

RUBINSTEIN V, QGD                                      1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 Nbd7 7 Rc1 c6

RUBINSTEIN V, QGD; ANTI-MERAN                          1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Ne5

RUBINSTEIN V, QGD; NORMAL POSITION               1 d4 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3 Nf6 7 Bg2 Be7 8 O-O O-O

RUBINSTEIN V, QGD; SCHLECTER V                          1 d4 d5 2 c4 e6 3 Nc3 c5 4 cd ed 5 Nf3 Nc6 6 g3

RUBINSTEIN V, SIC; NIMZOVICH V                            1 e4 c5 2 Nf3 Nf6

RUSSIAN D, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O d6

RUSSIAN D; PETROFF                                     1 e4 e5 2 Nf3 Nf6

RUSSIAN THREE KNIGHTS V, PETROFF       1 e4 e5 2 Nf3 Nf6 3 Nc3

RUSSIAN V, GRUNFELD                                 1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3

RUTH OPENING; TROMPOVSKY; OPOCENSKY        1 d4 Nf6 2 Bg5

RUY LOPEZ; SPANISH                                     1 e4 e5 2 Nf3 Nc6 3 Bb5

RYDEL-BLOODGOOD GAMBIT                                    1 Nf3 f5 2 e4 exf4 3 Ne5

RYDER V, BDG                                                 1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Qxf3

SAHOVIC D, QGD                                            1 d4 d5 2 c4 Bf5

SALVIO GAMBIT, KGA                                    1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5

SALVIO GAMBIT, QGD                                   1 d4 d5 2 c4 c5 3 dxc5 d4

SAMISCH V, KID                                                             1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 f3

SAMISCH V, NIMZO-INDIAN                                       1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 a3 Bxc3 5 bxc3

SAN PIER D'ARENA OPENING; GROB                        1 g4      

SAN SEBASTIAN V, QGD                                1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c5 5 cd Nxd5 6 e4 Nxc3 7 bc cd 8 cd Bb4+ 9 Bd2 Bxd2+ 10 Qxd2 O-O

SANTASIERE WING G, SICILIAN                   1 e4 c5 2 b4 cxb4 3 c4

SANTASIERE'S FOLLY, RETI                           1 Nf3 d5 2 b4                                                                       

SARAGOSSA OPENING; HEMPEL OPENING              1 c3

SAWYER'S G, RUY LOPEZ                                             1 e4 e5 2 Nf3 Nc6 3 Bb5 d5

SCANDANAVIAN G; CENTER COUNTER     1 e4 d5 2 exd5 Nf6 (MARSHALL G)

SCANDINAVIAN O; CENTER COUNTER                     1 e4 d5

SCANDINAVIAN V, ALEKHINE                      1 e4 Nf6 2 Nc3 d5

SCANDINAVIAN V, KGA; SCANDANAVIAN V            1 e4 e5 2 f4 exf4 3 Nf3 d5

SCHARA-HENNIG GAMBIT, QGD                 1 d4 d5 2 c4 e6 3 Nc3 c5 4 cxd5 cxd4

SCHEVENINGEN V, SICILIAN                        1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 e6

SCHIFFLER-SOKOLSKY G; TARTAKOWER G               1 b4 e5 2 Bb2 f6 3 e4 Bxb4

SCHILLER ;PYTEL-WADE V, CENTER COUNTER  1 e4 d5 2 exd5 Qxd5 3 Nc3 Qd6

SCHLECHTER DEFENSE, CENTER                                1 e4 e5 2 d4 exd4 3 c3 dxc3 4 Bc4 cxb2 5 Bxb2 d5

SCHLECHTER GAMBIT, BIRD (FROM'S G)   1 f4 e5 2 fxe5 Nc6

SCHLECTER V, QGD; LODZ V; RUBINSTEIN V           1 d4 d5 2 c4 e6 3 Nc3 c5 4 cxd5 exd5 5 Nf3 Nc6 6 g3

SCHLECTER V, RUY LOPEZ                                           1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Qe2 b5 7 Bb3 O-O 8 c3 d5                           

SCHLENKER GAMBIT                                      1 e4 e5 2 g3 f5

SCHLIEMANN DEFENSE DEFERRED, RUY LOPEZ     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 f5

SCHLIEMANN; JAENISCH D, RUY LOPEZ    1 e4 e5 2 Nf3 Nc6 3 Bb5 f5

SCHMID VARIATION, BENONI                     1 d4 c5 2 d5 d6 3 Nc3 g6

SCHMIDT ATTACK, PONZIANI                      1 e4 e5 2 Nf3 Nc6 3 c3 f5 4 d4 d6 5 d5

SCHMIDT V, SCOTCH                                     1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Nf6 5 Nc3

SCHNEPPER GAMBIT, INDIAN                     1 d4 Nf6 2 c4 b6 3 Nf3 e5

SCHULZ GAMBIT, ENGLISH                                          1 c4 d5 2 cxd5 Nf6 3 e4

SCHULZE-MULLER G; IRISH G; CHICAGO G;             1 e4 e5 2 Nf3 Nc6 3 Nxe5 Nxe5 4 d4

SCHUTTLER D, BDG                                        1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 Nbd7

SCHWARTZ D, QGA; VERESOV; BETBEDER               1 d4 d5 2 c4 dxc4 3 e4 f5

SCOTCH FOUR KNIGHTS GAME                   1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Nxd4 Nf6 5 Nc3     

SCOTCH GAMBIT                                                           1 e4 e5 2 Nf3 Nc6 3 d4 exd4 4 Bc4

SCOTCH GAME                                                1 e4 e5 2 Nf3 Nc6 3 d4

SEIRAWAN ATTACK                                        1 d4 Nf6 2 c4 e6 3 Bg5

SEMI-BENONI; BLOCKADE V                        1 d4 c5 2 d5 e5 3 e4 d6

SEMI-ITALIAN OPENING                                              1 e4 e5 2 Nf3 Nc6 3 Bc4 d6

SEMI-SLAV D                                                    1 d4 d5 2 c4 e6 3 Nc3 c6

SEMI-TARRASCH V, QGD                               1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 c5

SEVILLE V, GRUNFELD                                   4 cd Nd5 5 e4 Nc3 6 bc Bg7 7 Bc4 c5 8 Ne2 Nc6 9 Be3 O-O 10 O-O Bg4 11 f3 Na5 12 Bf7

SHANNON G, RUY LOPEZ                                             1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O b5 6 Bb3 Bb7 7 Ng5 d5

SHIRAZI SHOVE                                               1 c4 Nf6 2 g3 h5

SHORT SPIKE, GROB                                       1 g4 d5 2 Bg2 c6 3 h3

SICILIAN ATTACK; ENGLISH OPENING       1 c4

SICILIAN CENTER GAME                                              1 e4 c5 2 d4 cxd4

SICILIAN COUNTER-ATTACK; PIN V; SIC    1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 Bb4

SICILIAN DEFENSE                                          1 e4 c5

SICILIAN FRED                                                 1 e4 c5 2 Nf3 g6 3 d4 f5

SICILIAN V, NIMZO-INDIAN                         1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 c5        

SIESTA V, RUY LOPEZ                                     1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 c3 f5

SILBERSCHMIDT V, KGA                                1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 Nh6

SIMAGIN V, GRUNFELD                                 1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dc 6 Qxc4 O-O 7 e4 Nc6

SIMAGIN V, RUY, CLOSED                                           9 h3 Nb8 10 d4 Nbd7 11 Nh4

SIX PAWNS ATTACK, KID                                              1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 f4 c5 6 d5 O-O 7 Be2 de 8 de fe 9 g4 Nc6 10 h4

SJODIN GAMBIT                                              1 d4 e6 2 Nf3 f5 3 e4

SLAV BISHOP'S GAME                                    1 d4 d5 2 c4 c6 3 Nf3 Bf5

SLAV DEFENSE; QUEEN'S SLAV D; CZECH D             1 d4 d5 2 c4 c6

SLAV FIANCHETTO                                                        1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 g6

SLAV GAMBIT; GELLER'S LINE                      1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dc 5 e4

SLAV PAWN GAME                                         1 d4 d5 2 c4 c6 3 e3

SLAV STONEWALL, DUTCH                                   1 d4 d5 2 c4 e6 3 Nc3 c6 4 e3 f5

SLOW SICILIAN                                                              1 e4 c5 2 Be2

SMALL CENTER V, MODERN                        1 e4 g6 2 d4 Bg7 3 Nf3 d6, e6

SMITH-MORRA GAMBIT, SIC                       1 e4 c5 2 d4 cxd4 3 c3

SMYSLOV D, ENGLISH                                    1 c4 Nf6 2 Nc3 d5 3 cxd5 Nxd5 4 g3 g6 5 Bg2 Nxc3

SMYSLOV V, ENGLISH                                    1 c4 e5 2 Nc3 d6 3 Nf3 Bg4

SMYSLOV V, GRUNFELD                                1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dxc4 6 Qxc4 O-O 7 e4 Bg4 8 Be3 Nfd7

SMYSLOV V, QGA                                            1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 g6

SMYSLOV V, RUY LOPEZ                                1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 h3 h6

SMYSLOV V, RUY; BARNES D; FIANCHETTO V:        1 e4 e5 2 Nf3 Nc6 3 Bb5 g6

SMYSLOV/KAPENGUT V; MODERN V, ENGLISH      1 c4 e5 2 Nc3 Nf6 3 g3 Bb4

SNAGGLEPUSS                             1.e4 a5 2.d4 Nc6

SNEIDERS A, BDG                                                          1 d4 d5 2 e4 dxe4 3 Nc3 e5 4 Qh5

SNYDER V, SICILIAN                                       1 e4 c5 2 b3

SODIUM ATTACK; DURKIN ATTACK                           1 Na3

SOKOLSKY V, EVANS GAMBIT                1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 4 d4 d6 5 Bg5

SOKOLSKY/TARTAKOWER/ORANG-UTAN/POLISH                1 b4

SOLLER A (LEMBERGER C-G), BDG                             1 d4 d5 2 e4 dxe4 3 Nc3 e5 4 Be3

SOLLER A (VIENNA D), BDG                          1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 Bc4

SOLLER GAMBIT; PURCHAS GAMBIT                         1 d4 e5 2 dxe5 f6

SORENSEN DEFENSE, CENTER                     1 e4 e5 2 d4 exd4 3 c3 d5

SORENSEN GAMBIT, KGA                                            1 e4 e5 2 f4 exf4 3 Nf3 g5 4 d4 Bg4 5 Ne5              

SOVIET YOUTH V, RUY LOPEZ                      1 e4 e5 2 Nf3 Nc6 3 Bb5 f5 4 Nc3 Nd4 5 O-O

SOZIN V, QGD                                                  1 d4 d5 2 c4 e6 3 Nc3 c6 4 Nf3 Nf6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 a6 9 e4 c5 10 e5 cd 11 Nb5 Ne5               

SOZIN/VELIMIROVIC ATTACK, SICILIAN    1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bc4

SPANISH BENONI, RUY LOPEZ                     3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Qe2 b5 7 Bb3 d6 8 c3 O-O 9 h3 Na5 10 Bc2 c5 11 d4 Qc7 12 d5

SPANISH FOUR KNIGHT GAME                    1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5

SPANISH O, RUY LOPEZ                                 1 e4 e5 2 Nf3 Nc6 3 Bb5

SPASSKY GAMBIT                                                           1 d4 b5 2 e4 Bb7 3 Bxb5 f5

SPASSKY V, GRUNFELD                                  1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 cd Nxd5 5 e4 Nxc3 6 bxc3 Bg7 7 Bc4 O-O 8 Ne2 c5

SPASSKY V, RUY-MARSHALL                         9 ed Nxd5 10 Nxe5 Nxe5 11 Rxe5 c6 12 d4 Bd6 13 Re1 Qh4 14 g3 Qh3 15 Be3 Bg4 16 Qd3 Rae8 17 Nd2 Re6

SPERLING A, BDG                                                          1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 d5

SPIELMANN G, DUTCH                                  1 d4 f5 2 Nc3 Nf6 3 g4

SPIELMANN V, ALEKHINE                                            1 e4 Nf6 2 Nc3 d5 3 e5 Nfd7 4 e6

SPIELMANN V, NIMZO-INDIAN                   1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qb3

SPIKE                                                                 1 g4 d5 2 Bg2 c6 3 g5

SPIKE; GROB; KOLIBRI                                   1 g4

SPIKE DEFERRED                                             1 g4 g6 2 d3

ST GEORGE DEFENSE                                     1 Nc3 a6

ST GEORGE O; BIRMINGHAM D; BAKER D;              1 e4 a6 (BASMAN O; INCORRECT O)

ST. PETERSBURG V, RUY LOPEZ                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Be6 9 c3 Bc5 10 Nbd2

STAHLBERG V, QGD                                       3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dc 7 Bxc4 b5 8 Bd3 a6 9 e4 c5 10 e5 cd 11 Nxb5 Nxe5 12 Nxe5 ab 13 Qf3

STAUNTON D; BENONI                                 1 d4 c5

STAUNTON GAMBIT, DUTCH                                      1 d4 f5 2 e4

STAUNTON OPENING                                    1 e4 e5 2 c3

STEAN/KEENE V, ENGLISH                            1 c4 e5 2 Nc3 Nc6 3 Nf3 Nf6 4 e3 Bb4 5 Qc2 O-O 6 Nd5 Re8 7 Qf5       

STEENWIJK V, RUY; DERLD                                         1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Bxc6

STEIN ATTACK, ENGLISH                                              1 c4 Nf6 2 Nc3 d5 3 cxd5 Nxd5 4 Nf3 g6 5 Qa4+

STEIN OPENING; DUTCH D                                          1 d4 f5

STEINER V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 O-O 8 c3 d5 9 ed e4

STEINITZ ATTACK, FRENCH                                         1 e4 e6 2 e5

STEINITZ D DEFERRED; MODERN STEINITZ D, RUY; CHAMPION'S D  3 Bb5 a6 4 Ba4 d6         

STEINITZ D, RUY; OLD STEINITZ D              1 e4 e5 2 Nf3 Nc6 3 Bb5 d6

STEINITZ G, KGA                                                            1 e4 e5 2 f4 exf4 3 d4

STEINITZ GAMBIT, VIENNA                          1 e4 e5 2 Nc3 Nc6 3 f4 exf4 4 d4

STEINITZ V, FRENCH                                      1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7 7 f4          

STEINITZ V, FRENCH                                      1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 e5

STEINITZ V, FR; NIMZOVICH; ADVANCE    1 e4 e6 2 d4 d5 3 e5

STEINITZ V, FR; NIMZOVICH; ADVANCE:   1 e4 e6 2 d4 d5 3 e5

STEINITZ V, PETROFF                                     1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 d4

STEINITZ V, PONZIANI                                   1 e4 e5 2 Nf3 Nc6 3 c3 d5 4 Qa4 f6

STEINITZ V, QGA                                                            1 d4 d5 2 c4 dxc4 3 Nf3 Nf6 4 e3 e6 5 Bxc4 c5 6 O-O cxd4

STEINITZ V, SIC; TARTAKOWER V                               1 e4 c5 2 g3

STEINLACH-HOBBS GAMBIT                                       1 f4 g5

STILETTO; ALTHOUSE V, SICILIAN              1 e4 c5 2 Nf3 Qa5

STOCKWHIP V, KGA                                        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ne5 Qe7

STONE-WARE DEFENSE, EVANS GAMBIT  1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bd6

STONEWALL ATTACK                                     1 d4 d5 2 e3 Nf6 3 Bd3 c5 4 c3

STOPP V, QID                                                   1 d4 Nf6 2 c4 e6 3 Nf3 b6 4 g3 Bb7 5 Bg2 d5

STUDIER A, BDG                                                            1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 g6 6 Bc4 Bg7 7 O-O O-O 8 Qe1

SUETIN V, RUY LOPEZ                                   1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 d6 8 c3 O-O 9 a3

SVENONIUS V, 4 KNIGHTS                                           1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4 5 O-O O-O 6 d3 Bxc3 7 bxc3 d5

SVENONIUS V, FRENCH                                1 e4 e6 2 d4 d5 3 exd5 exd5 4 Nc3 Nf6

SVENONIUS V, KGD                                        1 e4 e5 2 f4 Bc5 3 Nf3 d6 4 Nc3 Nf6 5 Bc4 Nc6 5 Bc4 Nc6 6 d3 Bg4 7 h3 Bxf3 8 Qxf3 exf4

SVESHNIKOV V, SIC; ALAPIN                        1 e4 c5 2 c3

SWEDISH V, QG; FOLKESTONE V; MARSHALL G  see Folkestone

SWISS G, BIRD                                                 1 f4 f5 2 e4 fxe4 3 Nc3 Nf6 4 g4

SWISS V, FRENCH                                                          1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 e5 c5 5 a3 Ba5           

SWISS V; HENNEBERGER V, QGD                1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Rc1 a6

SYMMETRICAL D, AUSTRIAN D, QGD                        1 d4 d5 2 c4 c5  

SYMMETRICAL D, ENGLISH                                         1 c4 c5

SYMMETRICAL V, 4 KNIGHTS                       1 e4 e5 2 Nf3 Nc6 3 Nc3 Nf6 4 Bb5 Bb4 5 O-O O-O 6 d3 d6

SZABO V, GRUN; BOLESLAVSKY                  1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dxc4 6 Qxc4 O-O 7 e4 c6

SZEN V, SICILIAN                                            1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nc6 5 Nb5

TAIMANOV V, BENONI                                  1 d4 Nf6 2 c4 c5 3 d5 e6 4 Nc3 exd5 5 cxd5 d6 6 e4 g6 7 f4 Bg7 8 Bb5+

TAIMANOV V, NIMZO-INDIAN                    1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 e3 Nc6

TAIMANOV V, RUY; WING V:                       1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 b5 5 Bb3 Na5

TAIMANOV V, SIC; BASTRIKOV                    1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 Nc6

TAIMANOV-ARONIN V, KID                                         1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Be2 e5 7 O-O Nc6     

TAL V, BENONI                                                1 d4 Nf6 2 c4 c5 3 d5 e6

TARRASCH D, QGD                                                        1 d4 d5 2 c4 e6 3 Nc3 c5

TARRASCH G, CARO KANN                                          1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Nf6 5 Bd3

TARRASCH TRAP, RUY LOPEZ                       1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O d6 5 d4 Bd7 6 Nc3 Be7 7 Re1 O-O              

TARRASCH TRAP, RUY LOPEZ                       3 Bb5 a6 4 Na4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 dxe5 Be6 9 c3 Be7 10 Re1 O-O 11 Nd4 Qd7 12 Nxe6

TARRASCH V, FRENCH                                   1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Nfd7 6 Bxe7 Qxe7 7 Bd3

TARRASCH V, FRENCH                                   1 e4 e6 2 d4 d5 3 Nd2

TARRASCH V, RUY; OPEN VARIATION                       1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4

TARRASCH V, RUY;NIMZOVICH VARIATION            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 Nc3

TARTAKOWER A, EVANS GAMBIT                              1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 d4 d6 7 Qb3

TARTAKOWER C-G; BALOGH GAMBIT                       1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 e4 d6

TARTAKOWER D, BDG; GUNDERAM V:      1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 Bf5

TARTAKOWER G; LESSER BISHOP'S G, KGA              1 e4 e5 2 f4 exf4 3 Be2

TARTAKOWER G; SCHIFFLER-SOKOLSKY G               1 b4 e5 2 Bb2 f6 3 e4 Bxb4

TARTAKOWER;SOKOLSKY;ORANG-UTAN; POLISH 1 b4

TARTAKOWER V, CARO KANN                                    1 e4 c6 2 d4 d5 3 Nc3 dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6

TARTAKOWER V, FRENCH                                           1 e4 e6 2 d4 d5 3 Nc3 Nf6 4 Bg5 Be7 5 e5 Ne4                                                

TARTAKOWER V, KGA; LESSER BISHOP'S G:             1 e4 e5 2 f4 exf4 3 Be2

TARTAKOWER V, QGD                                   1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 O-O 6 Nf3 h6 7 Bh4 b6

TARTAKOWER V, RUY LOPEZ                                      1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 Qe2

TARTAKOWER V; STEINITZ V, SICILIAN      1 e4 c5 2 g3

TAUTVAISIS D, BDG                                        1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Qxf3 Nc6

TAYLOR O; INVERTED HUNGARIAN D        1 e4 e5 2 Nf3 Nc6 3 Be2

TAYLOR'S GAMBIT; QUAADE G, KGA                         1 e4 e5 2 f4 exf4 3 Ng3 g5 4 Nc3

TCHIGORIN  SEE CHIGORIN

TEICHMANN V, BDG                                      1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 Bg4

TEJLER A, BDG                                                 1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5 5 Bf4

TEJLER G, BDG                                                3 Nc3 Nf6 4 f3 ef 5 Qxf3 Qxd4 6 Be3 Qg4 7 Qf2 Ne4 8 Nxe4 Qxe4 9 O-O-O Nc6 10 Bd3 Qa4 11 a3 e5 12 Ne2 Bxa3

TENNISON G,RETI;ABONYI G; LEMBERG G;            1 Nf3 d5 2 e4 (LWOW)

THERKATZ-HERZOG, ITALIAN                       4 c3 Nf6 5 d4 ed 6 cd Bb4 7 Nc3 Ne4 8 O-O Bc3 9 d5 Bf6 10 Re1 Ne7 11 Re4 d6 12 Bg5 Bg5 13 Ng5 O-O 14 Nh7

THOROLD V, KGA                                                           1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 d4

THOROLD-ALLGAIER G, KGA                                       1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 d4

THREE KNIGHTS OPENING                                          1 e4 e5 2 Nf3 Nc6 3 Nc3

THREE KNIGHTS V, GRUNFELD                    1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3

THREE KNIGHTS V, NIMZO-INDIAN                           1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Nf3

THREE PAWNS GAMBIT; BERTIN G, KGA:  1 e4 e5 2 f4 exf4 3 Nf3 Be7 4 Bc4 Bh4+ 5 g3

THURING GAMBIT                                                         1 d4 e5 2 dxe5 d6

TIERS COUNTER-GAMBIT                                            1 e4 f5

TIMBUKTU V, RUY; KECSKEMET V   see Kecskemet V

TOLUSH-GELLER G, SLAV                                             1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 e4

TOMALTY G, CENTER COUNTER                                1 e4 d5 2 ed Nf6 3 d4 Nxd5 4 c4 Nf6 5 Nc3 c5

TORRE ATTACK                                               1 d4 Nf6 2 Nf3 e6 3 Bg5

TRAJKOVIC V, RUY LOPEZ                                            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Re1 b5 7 Bb3 Bb7

TRAXLER V, 2 KTS; WILKES-BARRE V          1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 Bc5

TREYBEL V, RUY; FLOHR V; EXCHANGE VARIATION DEFERRED        3 Bb5 a6 4 Ba4 Nf6 5 Bxc6

TRIFUNOVIC V, ALEKHINE                                           1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 c4 Nb6 5 f4 Bf5

TROGER V, ENGLISH                                      1 c4 e5 2 Nc3 Nc6 3 g3 d6 4 Bg2 Be6

TROMPOVSKY;OPOCENSKY;RUTH O; VAGANIAN   1 d4 Nf6 2 Bg5

TUBINGEN VARIATION, SOKOLSKY                           1 b4 Nh6

TUMBLEWEED; KING'S OWN G, KGA                        1 e4 e5 2 f4 exf4 3 Kf2

TWO KNIGHTS DEFENSE                                              1 e4 e5 2 Nf3 Nc6 3 Bc4

TWO KNIGHTS V, CARO KANN                     1 e4 c6 2 Nf3 d5 3 Nc3

TWO KNIGHTS V, ENGLISH                                         1 c4 c5 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4

TWO KNIGHTS V, FRENCH                                           1 e4 e6 2 Nf3 d5 3 Nc3

UEBERLINGER GAMBIT                                 1 d4 Nf6 2 g3 e5

UFIMTSEV D; PIRC D; ANTAL DEFENSE      1 e4 d6 2 d4 Nf6 3 Nc3 g6

UKRANIAN V, OLD INDIAN                           1 d4 Nf6 2 c4 d6 3 Nc3 e5

ULVESTAD V, 2 KNIGHTS                               1 e4 e5 2 Nf3 Nc6 3 Nc3 3 Bc4 Nf6 4 Ng5 d5 5 exd5 b5

ULVESTAD V, EVANS GAMBIT                      1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Bc5 6 d4 exd4 7 O-O d6 8 cxd4 Bb6 9 d5 Na5 10 Bb2

ULYSSES GAMBIT, CARO KANN                   1 e4 c6 2 d4 d5 3 Nf3

URUSOV ATTACK, KGA                                  1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 Bc4+ d5 8 Bxd5+ Ke8 9 d4             

URUSOV G, ; OUROUSSOFF G; KEIDANSKY G   1 e4 e5 2 Bc4 Nf6 3 d4 exd4 4 Nf3     

URUSOV G, PETROFF                                     1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 d4 exd4 4 Bc4

URUSOV G; KEIDANSKY G; OUROUSSOFF G            1 e4 e5 2 Bc4 Nf6 3 d4 exd4 4 Nf3

VAGANIAN A; TROMPOVSKY ATTACK                       1 d4 Nf6 2 Bg5

VAITONIS G; BENKO G; VOLGA G  see Benko

VALENCIA O; MIESES OPENING                  1 d3 e5 2 Nd2

VAN GEET O; KEVITZ-TRAJKOVIC DEFENSE              1 d4 Nf6 2 c4 Nc6

VAN'T KRUIJS  O; VAN'T KRUYS OPENING               1 e3

VECTOR GAMBIT, ENGLISH                                         1 c4 d5 2 cxd5 c6

VELIMIROVIC ATTACK, SIC; SOZIN                             1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bc4

VELIMIROVIC V, SICILIAN                                            1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 e6 6 Bc4 Nc6 7 Be3 Be7 8 Qe2             

VENEZOLANA                                                  1 d3 c5 2 Nc3 Nc6 3 g3

VENEZUELAN O; MIESES O; VALENCIA O  1 d3

VENICE V, QGD; CANAL VARIATION                          1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 c5 5 cxd5 Qb6

VERESOV V; RICHTER-VERESOV; BETBEDER V        1 d4 d5 2 Nc3 Nf6 3 Bg5

VIENNA D, KGA; HERFELD D; PORTUGUESE D        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Ne5 Qh4+ 6 Kf1 Nc6

VIENNA GAMBIT                                                            1 e4 e5 2 Nc3 Nc6 3 f4

VIENNA GAME                                                1 e4 e5 2 Nc3

VIENNA V; HANS MUELLERS V, BDG                         1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bf5

VINKEN SYSTEM, SICILIAN                                          1 e4 c5 2 Nc3 Nc6 3 f4

VINOGRADOV V, RUY LOPEZ                       1 e4 e5 2 Nf3 Nc6 3 Bb5 Qe7

VITZHUM ATTACK, SCOTCH                         3 d4 exd4 4 Bc4 Bc5 5 Ng5 Nh6 6 Qh5

VOLGA G; VAITONIS G; BENKO G   see Benko

VON BEIVORSEEN                                          1 d4 Nf6 2 Nc3 c5 3 dxc5

VON POPIEL GAMBIT                                     1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 Bg5

VON PRETZEL G, DUTCH                                              1 d4 f5 2 Qd3 e6 3 g4

VOS GAMBIT                                                    1 Nf3 d6 2 d4 e5

VULTURE VARIATION (DER GEIER)                            1 d4 Nf6 2 c4 c5 3 d5 Ne4

WADE DEFENSE                                              1 Nf3 d6

WADE V, FRENCH                                                          1 e4 e6 2 d4 d5 3 e5 c5 4 c3 Qb6 5 Nf3 Bd7

WADE V, QGA                                                  1 d4 d5 2 c4 dxc4 3 Nc3 Nf6 4 Nf3 c6 5 e3 Nbd7 6 Bd3 dxc4 7 Bxc4 b5 8 Bd3 Bb7

WAGNER GAMBIT; SWISS GAMBIT                            1 d4 Nf6 2 Nf3 e6 3 Bg5 c5 4 e4

WALKER ATTACK, KGA                                   1 e4 e5 2 f4 exf4 3 Nf3 g5 4 h4 g4 5 Ng5 h6 6 Nxf7 Kxf7 7 Bc4+

WALKERLING                                                   1 e4 e5 2 f3 Nf6

WALL V, ALEKHINE                                         1 e4 Nf6 2 e5 Nd5 3 d4 c5

WALLER ATTACK, EVANS GAMBIT                             1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4 Bxb4 5 c3 Ba5 6 d4 ed 7 O-O d6 8 Qb3

WARE OPENING; MEADOW HAY; CRAB                   1 a4

WEBSTER GAMBIT                                         1 d4 Nf6 2 f3 c5 3 d5 e6 4 e4 exd5 5 e5

WEIDENHAGEN G; BULLFROG G; KRABBE G; OCHSENFROSCH G; POISONED SPIKE  1 d4 Nf6 2 g4

WEINSBACH DECLINATION, BDG                              1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 e6

WEINSPACH D, BDG                                       1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f4 e6

WELLING GAMBIT, DUTCH                                         1 d4 f5 2 h3 d6 3 Nf3 g6 4 g4

WELLING VARIATION, ALEKHINE                1 e4 Nf6 2 e5 Nd5 3 b3

WESTPHALIA D; MANHATTAN V; QGD                      1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Nbd7 5 e3 Bb4

WHEELER G, NIMZOVICH DEFENSE                           1 e4 Nc6 2 b4 Nxb4 3 c3 Nc6 4 d4

WHITAKER G; ALAPIN G, FRENCH                              1 e4 e6 2 d4 d5 3 Be3

WIESBADEN V, SLAV                                      1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 Ne5 e6

WIESENGRUN D, BDG                                   1 d4 d5 2 e4 dxe4 3 Nc3 Nf6 4 f3 Bc5

WIKSTROM G, BUDAPEST                                            1 d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 e4 Nxe4 5 f4 Nbc6

WILD BULL; DUNST, etc                                              1 Nc3

WILD BULL DEFENSE                                     1 e4 Nh6

WILD CUNNINGHAM G, KGA                                      1 e4 e5 2 f4 exf4 3 Nf3 Be7 4 Bc4 Bh4+

WILD MUZIO G; GRECO-LOLLI GAMBIT        1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Bxf7+

WILKES-BARRE V; TRAXLER V, 2 KTS          1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 Bc5

WILLEMSON GAMBIT, KGA; POLERIO GAMBIT       1 e4 e5 2 f4 exf4 3 d4

WILLIAMS GAMBIT, BIRD                                            1 f4 d5 2 e4 dxe4 3 Nc3

WINAWER A, RUY LOPEZ                                             1 e4 e5 2 Nf3 Nc6 3 Bb5 Nf6 4 O-O Nxe4 5 d4 Be7 6 Qe2 Nd6 7 Bxc6+ bc 8 de Nb7 9 Nd4 O-O 10 Rd1  

WINAWER COUNTER-GAMBIT, SLAV                       1 d4 d5 2 c4 c6 3 Nc3 e5

WINAWER V, FRENCH                                   1 e4 e6 2 d4 d5 3 Nc3 Bb4

WINAWER V, QGA                                          1 d4 d5 2 c4 dc 3 Nf3 Nf6 4 e3 Be6

WINCKELMANN-REIMER GAMBIT, FRENCH           1 e4 e6 2 d4 d5 3 Nc3 Bb4 4 a3 Bxc3+ 5 bxc3 dxe4 6 f3

WIND GAMBIT                                                1 e4 g5 2 d4 Bg7

WING ATTACK, RUY LOPEZ                                         1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O b5 6 Bb3 Be7 7 a4

WING BLUMENFELD, RETI                                          1 Nf3 d5 2 c4 d4

WING GAMBIT DEFERRED, SICILIAN                         1 e4 c5 2 Nf3 d6 3 b4

WING GAMBIT, BISHOP                                1 e4 e5 2 Bc4 Bc5 3 b4

WING GAMBIT, FRENCH                               1 e4 e6 2 Nf3 d5 3 e5 c5 4 b4

WING GAMBIT, SIC; CHAMELEON VARIATION       1 e4 c5 2 b4

WING; TAIMANOV, RUY; FURMAN-TAIMANOV V                1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 b5 5 Bb3 Na5

WOLF GAMBIT; RETI; LANDSTRASSER G   1 Nf3 d5 2 c4

WOODCHUCK                               1.e4 a6 2.d4 Nc6

WOOZEL (WASEL) DEFENSE                                        1 d4 c5 2 d5 Nf6 3 Nc3 Qa5

WORMALD V, RUY LOPEZ                                            1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 Qe2

WORRALL ATTACK, RUY LOPEZ                   1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Be7 6 Qe2

WULUMULU                                                   1 h4 e5 2 d4

WURZBURGER TRAP, VIENNNA                  2 Nc3 Nf6 3 f4 d5 4 fe Ne4 5 d3 Qh4 6 g3 Ng3 7 Nf3 Qh5 8 Nd5 Bd5 9 Nf4 Bf3 10 Nh5 Bd1 11 hg Bc2 12 b3    

YOUNG V, KGA                                                1 e4 e5 2 f4 exf4 3 Nf3 g5 4 Bc4 g4 5 Bxf7+ Kxf7 6 O-O gf 7 Qxf3 Qf6 8 d4 Qxd4+ 9 Be3 Qf6 10 Nc3

YUGOSLAV DEFENSE; AUTRIAN ATTACK   1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 f4 Bg7 5 Nf3

YUGOSLAV V, GRUNFELD                                            1 d4 Nf6 2 c4 g6 3 Nc3 d5 4 Nf3 Bg7 5 Qb3 dc 6 Qxc4 O-O 7 e4 Bg4 8 Be3 Nfd7 9 Qb3 c5            

YURDANSKY ATTACK, 2 KTS            see Jordansky Attack                   

YUSUPOV-RUBINSTEIN SYSTEM                                1 d4 Nf6 2 Nf3 e6 3 e3

ZAGREB V, SICILIAN                                       1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 a6 6 g3

ZAITSEV V, BENKO GAMBIT                                         1 d4 Nf6 2 c4 c5 3 d5 b5 4 cb a6 5 Nc3 ab 6 e4 b4 7 Nb5 d6 8 Nf3 g6 9 Bc4

ZAITSEV V, RUY LOPEZ                                  1 e4 e5 2 Nf3 Nc6 3 Bb5 Bc5 4 O-O Nd4 5 b4

ZAITSEV V, SICILIAN                                       1 e4 c5 2 Nf3 d6 3 d4 cd 4 Qxd4 Nc6 5 Bb5 Qd7

ZELLER D, BDG                                                1 d4 d5 2 e4 dxe4 3 Nc3 Bf5 4 f3 exf3 5 Qxf3 Bc8

ZHURAVLEV C-G, VIENNA                                            1 e4 e5 2 Nc3 Bb4 3 Qg4

ZIEGLER V; GUNDERAM'S 2ND DEFENSE, BDG       1 d4 d5 2 e4 de 3 Nc3 Nf6 4 f3 exf3 5 Nxf3 c6

ZINNOWITZ V, KID                                         1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 Nf3 O-O 6 Bg5

ZOLLNER GAMBIT, SICILIAN                        1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 g6 6 Be3 Bg7 7 Be2 Nc6 8 O-O O-O 9 f4 Qb6 10 e5

ZOT                                                                    1 d4 d5 2 Bg5

ZUKERTORT DEFENSE, VIENNA                   1 e4 e5 2 Nc3 Nc6 3 f4 ef 4 d4 Qh4+ 5 Ke2 d5

ZUKERTORT OPENING; RETI                        1 Nf3

ZUKERTORT V, RUY LOPEZ                                          1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 Nf6 5 O-O Nxe4 6 d4 b5 7 Bb3 d5 8 de Ne7

ZURICH V; MILNER-BARRY V, NIMZO-INDIAN        1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Qc2 Nc6