rnbqkbnr/pppppppp/8/8/2P5/8/PP1PPPPP/RNBQKBNR b KQkq - 0 1 ; A10 English Opening
rnbqkb1r/pppppppp/5n2/8/2P1P3/8/PP1P1PPP/RNBQKBNR b KQkq - 0 2 ; A10 English Opening: Achilles-Omega Gambit
rnbqkbnr/pppp1p1p/6p1/4p3/2P1P3/8/PP1P1PPP/RNBQKBNR w KQkq - 0 3 ; A10 English Opening: Adorjan Defense
rnbqkbnr/ppppp1pp/8/5p2/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A10 English Opening: Anglo-Dutch Defense
rnbqkbnr/ppppp1pp/8/5p2/2P1P3/8/PP1P1PPP/RNBQKBNR b KQkq - 0 2 ; A10 English Opening: Anglo-Dutch Defense, Hickmann Gambit
rnbqkbnr/ppp1p1pp/3p4/5p2/2P1P3/5N2/PP1P1PPP/RNBQKB1R b KQkq - 0 3 ; A10 English Opening: Anglo-Dutch Variation, Chabanon Gambit
rnbqkb1r/ppppp1pp/5n2/5p2/2P1P3/2N5/PP1P1PPP/R1BQKBNR b KQkq - 0 3 ; A10 English Opening: Anglo-Dutch Variation, Ferenc Gambit
r1bqkbnr/pppppppp/2n5/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 1 2 ; A10 English Opening: Anglo-Lithuanian Variation
rnbqkbnr/ppp1pppp/8/3p4/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A10 English Opening: Anglo-Scandinavian Defense
rnbqkbnr/ppp2ppp/4p3/3P4/8/8/PP1PPPPP/RNBQKBNR w KQkq - 0 3 ; A10 English Opening: Anglo-Scandinavian Defense, Löhn Gambit
rnb1kbnr/ppp1pppp/8/q7/8/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 4 ; A10 English Opening: Anglo-Scandinavian Defense, Malvinas Variation
rnbqkb1r/ppp1pppp/5n2/3P4/8/8/PP1PPPPP/RNBQKBNR w KQkq - 1 3 ; A10 English Opening: Anglo-Scandinavian Defense, Schulz Gambit
rnbqkbnr/pppppp1p/6p1/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A10 English Opening: Great Snake Variation
rnbqkbnr/p1pppppp/8/1p6/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A10 English Opening: Jaenisch Gambit
rnbq1rk1/1p3pbp/p1pp1np1/4p3/2P1P3/2NP2P1/PP2NPBP/R1BQ1RK1 w - - 0 9 ; A10 English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System
rnbqkbnr/pppppp1p/8/6p1/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A10 English Opening: Myers Defense
rnbqk1nr/ppppppbp/8/6p1/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 1 3 ; A10 English Opening: Myers Gambit
rnbqkb1r/ppppp1pp/5n2/8/2P1p1P1/2N5/PP1P1P1P/R1BQKBNR b KQkq - 0 4 ; A10 English Opening: Porcupine Variation
rnbqkbnr/ppppp1pp/8/5p2/2P3P1/8/PP1PPP1P/RNBQKBNR b KQkq - 0 2 ; A10 English Opening: Wade Gambit
rnbqkbnr/pppp1p1p/8/4p1p1/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3 ; A10 English Opening: Zilbermints Gambit
rnbqkbnr/pp1ppppp/2p5/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A11 English Opening: Caro-Kann Defensive System
rnbqkbnr/pppp1ppp/4p3/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A13 English Opening: Agincourt Defense
rnbqkbnr/pppp1ppp/4p3/8/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 1 2 ; A13 English Opening: Agincourt Defense
rnbqkbnr/ppp2ppp/4p3/3p4/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A13 English Opening: Agincourt Defense
rnbq1rk1/ppp1bppp/4pn2/3p4/2P5/1P2PN2/PB1P1PPP/RN1QKB1R w KQ - 1 6 ; A13 English Opening: Agincourt Defense
rnbq1rk1/ppp1bppp/4pn2/3p4/2PP4/1P2PN2/PB3PPP/RN1QKB1R b KQ - 0 6 ; A13 English Opening: Agincourt Defense
rnbqk2r/ppp2ppp/3bpn2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 3 5 ; A13 English Opening: Agincourt Defense, Bogoljubow Defense
rn1qkbnr/pbp2ppp/1p2p3/3p4/2P5/5NP1/PP1PPPBP/RNBQ1RK1 b kq - 3 5 ; A13 English Opening: Agincourt Defense, Catalan Defense
rnbqkbnr/pp3ppp/4p3/2pp4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4 ; A13 English Opening: Agincourt Defense, Catalan Defense
rnbqkb1r/ppp2ppp/4pn2/8/2p5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 0 5 ; A13 English Opening: Agincourt Defense, Catalan Defense Accepted
rnbqkb1r/pp3ppp/2p1pn2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 0 5 ; A13 English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense
rnbqkbnr/pp3ppp/2p1p3/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4 ; A13 English Opening: Agincourt Defense, Kurajica Defense
r1bqk2r/pp2bppp/2n1pn2/2pp4/2P5/1P3NP1/P2PPPBP/RNBQ1RK1 w kq - 3 7 ; A13 English Opening: Agincourt Defense, Tarrasch Defense
rnbqkb1r/pp3ppp/4pn2/2pp4/2P5/1P2PN2/PB1P1PPP/RN1QKB1R b KQkq - 0 5 ; A13 English Opening: Agincourt Defense, Wimpy System
rnbqkb1r/ppp2ppp/4pn2/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 1 4 ; A13 English Opening: Neo-Catalan
rnbqk2r/ppp1bppp/4pn2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 3 5 ; A13 English Opening: Neo-Catalan Declined
rnbqkb1r/2pp1ppp/p3pn2/1p6/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 0 5 ; A13 English Opening: Romanishin Gambit
r1bqk2r/pp2bppp/2n1p3/2pn4/8/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 2 8 ; A14 English Opening: Agincourt Defense, Keres Defense
rnbqk2r/ppp1bppp/4pn2/3p4/2P5/5NP1/PP1PPPBP/RNBQ1RK1 b kq - 4 5 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
rnbq1rk1/ppp1bppp/4pn2/3p4/2P5/1P3NP1/P2PPPBP/RNBQ1RK1 b - - 0 6 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
rnbq1rk1/pp2bppp/4pn2/2pp4/2P5/1P3NP1/P2PPPBP/RNBQ1RK1 w - - 0 7 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
rnbq1rk1/pp2bppp/4pn2/2pp4/2P5/1P2PNP1/P2P1PBP/RNBQ1RK1 b - - 0 7 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
rnbq1rk1/pp2bppp/4pn2/2p5/2Pp4/1P2PNP1/P2P1PBP/RNBQ1RK1 w - - 0 8 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
r1bq1rk1/pp2bppp/2n1pn2/2pp4/2P5/1P2PNP1/P2P1PBP/RNBQ1RK1 w - - 1 8 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined
rnbqk2r/ppp1bppp/4pn2/3p4/2P5/1P3NP1/P2PPPBP/RNBQK2R b KQkq - 0 5 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3
rnbqk2r/p1p1bppp/1p2pn2/3p4/2P5/1P3NP1/P2PPPBP/RNBQK2R w KQkq - 0 6 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3
rnbqk2r/pp2bppp/4pn2/2pp4/2P5/1P3NP1/P2PPPBP/RNBQK2R w KQkq - 0 6 ; A14 English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3
rnbqkb1r/pppppppp/5n2/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 1 2 ; A15 English Opening: Anglo-Indian Defense
rnbqk2r/ppppppbp/5np1/8/2P1P3/2N2N2/PP1P1PPP/R1BQKB1R b KQkq - 0 4 ; A15 English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld
rnbqkb1r/ppp1pp1p/5np1/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4 ; A15 English Opening: Anglo-Indian Defense, Grünfeld Formation
rnbqkb1r/pppppp1p/5np1/8/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A15 English Opening: Anglo-Indian Defense, King's Indian Formation
rn1qkb1r/pbpppp1p/1p3np1/8/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 2 5 ; A15 English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto
rnbqkb1r/pppppppp/5n2/8/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 2 2 ; A15 English Opening: Anglo-Indian Defense, King's Knight Variation
rnbqkb1r/ppp1pppp/3p1n2/8/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A15 English Opening: Anglo-Indian Defense, Old Indian Formation
rnbqkb1r/p1pppppp/1p3n2/8/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A15 English Opening: Anglo-Indian Defense, Queen's Indian Formation
rn1qkb1r/pbpp1ppp/1p2pn2/8/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 2 5 ; A15 English Opening: Anglo-Indian Defense, Queen's Indian Formation
rnbqkb1r/1ppp1ppp/p3pn2/8/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4 ; A15 English Opening: Anglo-Indian Defense, Romanishin Variation
rnbqkb1r/ppp1pppp/5n2/3p4/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A15 English Opening: Anglo-Indian Defense, Scandinavian Defense
rnbqkb1r/ppp1pppp/8/3n4/8/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 4 ; A15 English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation
rnbqkb1r/pp1ppp1p/2p2np1/8/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4 ; A15 English Opening: Anglo-Indian Defense, Slav Formation
rnbqkb1r/ppp1pppp/5n2/3p4/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 0 3 ; A16 English Opening: Anglo-Grünfeld Defense
rnbqk2r/ppp2pbp/6p1/3np3/8/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 0 7 ; A16 English Opening: Anglo-Grünfeld Defense, Korchnoi Variation
rnbqkb1r/ppp1pppp/8/3n4/8/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 1 4 ; A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation
rnbqkb1r/ppp1pp1p/6p1/3n4/8/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 0 5 ; A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation
rnbqkb1r/ppp1pp1p/1n4p1/8/8/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 2 6 ; A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation
rnbqkb1r/ppp1pp1p/6p1/8/8/2n3P1/PP1PPPBP/R1BQK1NR w KQkq - 0 6 ; A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation
rnbqkb1r/pppppppp/5n2/8/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 2 2 ; A16 English Opening: Anglo-Indian Defense, Queen's Knight Variation
rnbqkb1r/pp3ppp/4p3/2pn4/8/2N1PN2/PP1P1PPP/R1BQKB1R w KQkq - 0 6 ; A17 English Opening: Anglo-Indian Defense
rnbqkb1r/pppp1ppp/4pn2/8/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 0 3 ; A17 English Opening: Anglo-Indian Defense, Hedgehog System
rnbqk2r/pppp1ppp/4pn2/8/1bP5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 2 4 ; A17 English Opening: Anglo-Indian Defense, Nimzo-English
rnbqkb1r/p1pp1ppp/1p2pn2/8/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 0 4 ; A17 English Opening: Anglo-Indian Defense, Queen's Indian Formation
rn1qkb1r/pbpp1ppp/1p2pn2/8/2P1P3/2NB1N2/PP1P1PPP/R1BQK2R b KQkq - 2 5 ; A17 English Opening: Anglo-Indian Defense, Queen's Indian Variation
rnbqk2r/pppp1ppp/4pn2/8/1bP3P1/2N2N2/PP1PPP1P/R1BQKB1R b KQkq - 0 4 ; A17 English Opening: Anglo-Indian Defense, Zvjaginsev-Krasenkow Attack
rnbqkb1r/pppp1ppp/4pn2/8/2P1P3/2N5/PP1P1PPP/R1BQKBNR b KQkq - 0 3 ; A18 English Opening: Mikenas-Carls Variation
r1bqkb1r/pppp1ppp/2n1pn2/8/2P1P3/2N5/PP1P1PPP/R1BQKBNR w KQkq - 1 4 ; A18 English Opening: Mikenas-Carls Variation
rnbqkb1r/ppp2ppp/4pn2/3pP3/2P5/2N5/PP1P1PPP/R1BQKBNR b KQkq - 0 4 ; A18 English Opening: Mikenas-Carls Variation
rnbqkbnr/pp1p1ppp/4p3/2p1P3/2P5/2N5/PP1P1PPP/R1BQKBNR w KQkq - 1 5 ; A19 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit
rnbqkb1r/pp1p1ppp/4pn2/2p5/2P1P3/2N5/PP1P1PPP/R1BQKBNR w KQkq - 0 4 ; A19 English Opening: Mikenas-Carls, Sicilian
rnbqkbnr/pppp1pp1/8/4p2p/2P5/6P1/PP1PPP1P/RNBQKBNR w KQkq - 0 3 ; A20 English Opening: Drill Variation
rnbqkbnr/pppp1ppp/8/4p3/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A20 English Opening: King's English Variation
rnbqkb1r/pppp1ppp/5n2/8/2P2p2/4PN2/PP1P2PP/RNBQKB1R b KQkq - 1 4 ; A20 English Opening: King's English Variation, Kahiko-Hula Gambit
rnbqkbnr/pppp1ppp/8/4p3/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 1 2 ; A20 English Opening: King's English Variation, Nimzowitsch Variation
rnbqkbnr/pppp1ppp/8/8/2P1p3/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3 ; A20 English Opening: King's English Variation, Nimzowitsch-Flohr Variation
rnbqkbnr/ppp2ppp/3p4/4p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 1 3 ; A21 English Opening: King's English Variation
rnbqkbnr/pp3ppp/2pp4/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 ; A21 English Opening: King's English Variation, Keres Defense
rnbqk1nr/pppp1ppp/8/4p3/1bP5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3 ; A21 English Opening: King's English Variation, Kramnik-Shirov Counterattack
rnbqkbnr/pppp1ppp/8/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 1 2 ; A21 English Opening: King's English Variation, Reversed Sicilian
rn1qkbnr/ppp2ppp/3p4/4p3/2P3b1/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 2 4 ; A21 English Opening: King's English Variation, Smyslov Defense
r2qkbnr/ppp2ppp/2npb3/4p3/2P5/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 2 5 ; A21 English Opening: King's English Variation, Troger Defense
rnbqkb1r/pppp1ppp/5n2/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR b KQkq - 0 3 ; A22 English Opening: Carls-Bremen System
rnbqkb1r/pp1p1ppp/2p2n2/6N1/2P1p3/2N5/PP1PPPPP/R1BQKB1R w KQkq - 0 5 ; A22 English Opening: King's English Variation, Adhiban Gambit
rnbqkb1r/p1pp1ppp/5n2/1p4N1/2P1p3/2N5/PP1PPPPP/R1BQKB1R w KQkq - 0 5 ; A22 English Opening: King's English Variation, Bellon Gambit
rnbqkb1r/pppp1ppp/5n2/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3 ; A22 English Opening: King's English Variation, Two Knights Variation
rnbqkb1r/ppp2ppp/5n2/3pp3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 ; A22 English Opening: King's English Variation, Two Knights Variation, Reversed Dragon
rnbqk2r/pppp1ppp/5n2/4p3/1bP5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 1 4 ; A22 English Opening: King's English Variation, Two Knights Variation, Smyslov System
rnbqkb1r/pppp1ppp/8/6N1/2P1p1n1/2N5/PP1PPPPP/R1BQKB1R w KQkq - 2 5 ; A22 English Opening: King's English, Erbenheimer Gambit
rnbqkb1r/pppp1ppp/5n2/4p3/2P2P2/2N5/PP1PP1PP/R1BQKBNR b KQkq - 0 3 ; A22 English Opening: King's English, Mazedonisch
rnbqkb1r/pp1p1ppp/2p2n2/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 ; A23 English Opening: King's English Variation, Two Knights Variation, Keres Variation
rnbqk2r/pp1p1ppp/2p2n2/2b1p3/2P5/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 0 5 ; A23 English Opening: King's English Variation, Two Knights Variation, Keres Variation
rnbqkb1r/pppp1p1p/5np1/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 ; A24 English Opening: King's English Variation, Two Knights Variation, Fianchetto Line
r1bqk2r/pppp1pbp/2n3pn/4p3/2P5/2N3P1/PP1PPPBP/1RBQK1NR w Kkq - 4 6 ; A25 English Opening: Closed, Taimanov Variation
r1bqk2r/ppp2pbp/2np2pn/4p3/2P5/2N1P1P1/PP1PNPBP/R1BQK2R w KQkq - 2 7 ; A25 English Opening: Closed, Taimanov Variation
r2qk1nr/ppp2pbp/2npb1p1/4p3/2P5/2N1P1P1/PP1PNPBP/R1BQK2R w KQkq - 2 7 ; A25 English Opening: King's English Variation, Bremen-Hort Variation
r1bqk1nr/pppp1pbp/2n3p1/4p3/2P5/2NP2P1/PP2PPBP/R1BQK1NR b KQkq - 0 5 ; A25 English Opening: King's English Variation, Closed System
r1bqk1nr/pppp1pbp/2n3p1/4p3/2P5/2N3P1/PP1PPPBP/1RBQK1NR b Kkq - 3 5 ; A25 English Opening: King's English Variation, Hungarian Attack
r1bqkbnr/pppp1ppp/2n5/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3 ; A25 English Opening: King's English Variation, Reversed Closed Sicilian
r1bqk2r/pppp1ppp/2n2n2/3Np3/1bP5/6P1/PP1PPPBP/R1BQK1NR b KQkq - 6 5 ; A25 English Opening: King's English Variation, Reversed Closed Sicilian
r1bqk2r/ppp2ppp/2np1n2/4p3/1bP1P3/2N3P1/PP1PNPBP/R1BQK2R b KQkq - 1 6 ; A25 English Opening: King's English Variation, Reversed Closed Sicilian
r2qk2r/ppp2ppp/2np1n2/4p3/1bP1P1b1/2N3P1/PP1PNPBP/R1BQK2R w KQkq - 2 7 ; A25 English Opening: King's English Variation, Reversed Closed Sicilian
r1bq1rk1/pppp1ppp/2n2n2/4p3/1bP1P3/2N3P1/PP1PNPBP/R1BQK2R b KQ - 4 6 ; A25 English Opening: King's English Variation, Reversed Closed Sicilian
r1bqk1nr/pppp1pbp/2n3p1/4p3/2P5/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 2 5 ; A25 English Opening: King's English Variation, Taimanov Variation
r1bqk1nr/ppp2pbp/2np2p1/4p3/2P1P3/2NP2P1/PP3PBP/R1BQK1NR b KQkq - 0 6 ; A26 English Opening: King's English Variation, Botvinnik System
r1bqk1nr/ppp2pbp/2np2p1/4p3/2P5/2NP2P1/PP2PPBP/R1BQK1NR w KQkq - 0 6 ; A26 English Opening: King's English Variation, Closed System, Full Symmetry
r1bqkbnr/pppp1ppp/2n5/4p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 3 3 ; A27 English Opening: King's English Variation, Three Knights System
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P1P3/2N2N2/PP1P1PPP/R1BQKB1R b KQkq - 0 4 ; A28 English Opening: Four Knights System, Nimzowitsch Variation
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 4 4 ; A28 English Opening: King's English Variation, Four Knights Variation
r1bqk2r/pppp1pp1/5n1p/4n3/2PN3B/2P5/P3PPPP/R2QKB1R w KQkq - 1 9 ; A28 English Opening: King's English Variation, Four Knights Variation
r1bqkb1r/pppp1ppp/2n2n2/8/2PPp3/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5 ; A28 English Opening: King's English Variation, Four Knights Variation, Bradley Beach Variation
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2NP1N2/PP2PPPP/R1BQKB1R b KQkq - 0 4 ; A28 English Opening: King's English Variation, Four Knights Variation, Flexible Line
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/P1N2N2/1P1PPPPP/R1BQKB1R b KQkq - 0 4 ; A28 English Opening: King's English Variation, Four Knights Variation, Korchnoi Line
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2N1PN2/PP1P1PPP/R1BQKB1R b KQkq - 0 4 ; A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line
r1bqk2r/pppp1ppp/2n2n2/4p3/2P5/2b1PN2/PPQP1PPP/R1B1KB1R w KQkq - 0 6 ; A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line
r1bqr1k1/pppp1ppp/2n2n2/3NpQ2/1bP5/4PN2/PP1P1PPP/R1B1KB1R b KQ - 6 7 ; A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line
r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2N2NP1/PP1PPP1P/R1BQKB1R b KQkq - 0 4 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bqk2r/pppp1ppp/2n2n2/4p3/1bP5/2N2NP1/PP1PPP1P/R1BQKB1R w KQkq - 1 5 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bq1rk1/ppp2ppp/2np1n2/4p3/2P5/2P2NP1/PP2PPBP/R1BQ1RK1 w - - 2 8 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bqkb1r/ppp2ppp/2n5/3np3/8/5NP1/PP1PPPBP/RNBQK2R w KQkq - 2 6 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bqkb1r/ppp2ppp/2n5/3np3/8/3P1NP1/PP2PPBP/RNBQK2R b KQkq - 0 6 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bq1rk1/ppp1bppp/2n5/3np3/8/3P1NP1/PP2PPBP/RNBQ1RK1 w - - 3 8 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
r1bqr1k1/pppp1ppp/2n2n2/8/1bPNp3/2N3P1/PP1PPPBP/R1BQ1RK1 w - - 2 8 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, Delayed .. Nc6
r1bqk2r/ppp2ppp/2np1n2/2b1p3/2P5/2NP1NP1/PP2PPBP/R1BQK2R b KQkq - 1 6 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6
r1bq1rk1/ppp2ppp/2np1n2/2b1p3/2P5/2NP1NP1/PP2PPBP/R1BQ1RK1 b - - 3 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6
r1bq1rk1/ppp1bppp/2np1n2/4p3/2P5/2NP1NP1/PP2PPBP/R1BQK2R w KQ - 3 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, Be7
r1bqk2r/1pp2ppp/p1np1n2/2b1p3/2P5/2NP1NP1/PP2PPBP/R1BQK2R w KQkq - 0 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, a6
r1bqk2r/ppp2pp1/2np1n1p/2b1p3/2P5/2NP1NP1/PP2PPBP/R1BQK2R w KQkq - 0 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, h6
r1bqk2r/ppp2ppp/2n5/2bnp3/8/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 2 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Bc5
r1bqkb1r/ppp2ppp/1nn5/4p3/8/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 2 7 ; A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6
rnbqkbnr/pp1ppppp/8/2p5/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2 ; A30 English Opening: Symmetrical Variation
rnbqkbnr/pp1ppppp/8/2p5/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 1 2 ; A30 English Opening: Symmetrical Variation
rn1qk2r/pb1pbppp/1p2pn2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 4 7 ; A30 English Opening: Symmetrical Variation, Hedgehog Defense
rnbqkb1r/pp1ppppp/5n2/2p5/1PP5/5N2/P2PPPPP/RNBQKB1R b KQkq - 0 3 ; A30 English Opening: Symmetrical Variation, Napolitano Gambit
r2qk2r/1b1nbppp/pp1ppn2/8/2PQ4/1PN2NP1/P3PPBP/R1BR2K1 w kq - 1 11 ; A30 English Opening: Symmetrical, Hedgehog, Flexible Formation
rnbqkbnr/pp1ppppp/8/2p5/1PP5/8/P2PPPPP/RNBQKBNR b KQkq - 0 2 ; A30 English Opening: Wing Gambit
rnbqkb1r/pp1ppppp/5n2/2p5/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - 1 3 ; A31 English Opening: Symmetrical Variation, Anti-Benoni Variation
rnbqkb1r/pp1p1ppp/4pn2/8/2PN4/8/PP2PPPP/RNBQKB1R w KQkq - 1 5 ; A32 English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense
r1b1kb1r/pp1p1ppp/1qn1pn2/8/2PN4/2N3P1/PP2PP1P/R1BQKB1R w KQkq - 1 7 ; A33 English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation
r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN4/2N5/PP2PPPP/R1BQKB1R w KQkq - 1 6 ; A33 English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense
r1bqkb1r/pp2pppp/2n2n2/3p4/2Pp4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 0 6 ; A34 English Opening: Symmetrical Variation
rnbqkb1r/pp1ppppp/5n2/2p5/2P5/2N3P1/PP1PPP1P/R1BQKBNR b KQkq - 0 3 ; A34 English Opening: Symmetrical Variation, Fianchetto Variation
rnbqkbnr/pp1ppppp/8/2p5/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 1 2 ; A34 English Opening: Symmetrical Variation, Normal Variation
rnbqkb1r/ppn1pppp/8/2p5/8/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 2 6 ; A34 English Opening: Symmetrical Variation, Rubinstein Variation
r1bqkb1r/ppn1pppp/2n5/2p5/8/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 3 7 ; A34 English Opening: Symmetrical Variation, Rubinstein Variation
rnbqkb1r/pp1ppppp/5n2/2p5/2P5/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 3 3 ; A34 English Opening: Symmetrical Variation, Three Knights Variation
rnbqkb1r/pp1p1ppp/5n2/2p1p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 0 4 ; A35 English Opening: Symmetrical Variation
r1bqkb1r/pp1ppppp/2n2n2/2p5/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 4 4 ; A35 English Opening: Symmetrical Variation, Four Knights Variation
r1bqkb1r/pp1p1ppp/2n1pn2/2p5/2P5/2N2NP1/PP1PPP1P/R1BQKB1R w KQkq - 0 5 ; A35 English Opening: Symmetrical Variation, Four Knights Variation, Keres-Parma System
r1bqkbnr/pp1ppppp/2n5/2p5/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3 ; A35 English Opening: Symmetrical Variation, Two Knights Variation
r1bqk1nr/pp1pppbp/2n3p1/2p5/2P1P3/2N3P1/PP1P1PBP/R1BQK1NR b KQkq - 2 5 ; A36 English Opening: Symmetrical Variation, Botvinnik System
r1bqk1nr/pp1p1pbp/2n3p1/2p1p3/2P5/2N1P1P1/PP1P1PBP/R1BQK1NR w KQkq - 0 6 ; A36 English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3
r1bqkbnr/pp1ppppp/2n5/2p5/2P5/2N3P1/PP1PPP1P/R1BQKBNR b KQkq - 0 3 ; A36 English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation
r1bqk1nr/pp1pppbp/2n3p1/2p5/2P5/2N3P1/PP1PPPBP/R1BQK1NR w KQkq - 4 5 ; A36 English Opening: Symmetrical Variation, Ultra-Symmetrical Variation
r1bqk1nr/pp1p1pbp/2n3p1/2p1p3/2P5/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 0 6 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk1nr/pp3pbp/2np2p1/2p1p3/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 0 7 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk2r/pp1pnpbp/2n3p1/2p1p3/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 2 7 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk2r/pp1pnpbp/2n3p1/2p1p3/2P5/P1N2NP1/1P1PPPBP/R1BQ1RK1 b kq - 0 7 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk2r/pp1pnpbp/2n3p1/2p1p3/2P5/2NP1NP1/PP2PPBP/R1BQ1RK1 b kq - 0 7 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk2r/pp2npbp/2np2p1/2p1p3/2P5/2NP1NP1/PP2PPBP/R1BQ1RK1 w kq - 0 8 ; A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
r1bqk1nr/pp1pppbp/2n3p1/2p5/2P5/2N2NP1/PP1PPPBP/R1BQK2R b KQkq - 3 5 ; A37 English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation
r1bqk1nr/pp2ppbp/2np2p1/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 b kq - 1 6 ; A37 English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation
r1bqk1nr/pp1p1pbp/2n1p1p1/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 b kq - 1 6 ; A37 English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation
r1bq1rk1/pp1pppbp/2n2np1/2p5/2P5/1PN2NP1/P2PPPBP/R1BQ1RK1 b - - 0 7 ; A38 English Opening: Symmetrical Variation, Double Fianchetto
r1bq1rk1/pp1pppbp/2n2np1/2p5/2P5/2NP1NP1/PP2PPBP/R1BQ1RK1 b - - 0 7 ; A38 English Opening: Symmetrical Variation, Duchamp Variation
r1bqk2r/pp1pppbp/2n2np1/2p5/2P5/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 2 6 ; A38 English Opening: Symmetrical Variation, Full Symmetry Line
r1bq1rk1/pp1pppbp/2n2np1/2p5/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 b - - 0 7 ; A39 English Opening: Symmetrical Variation, Mecking Variation
rnbqkbnr/pppp1ppp/8/4p3/2P1P3/8/PP1P1PPP/RNBQKBNR b KQkq - 0 2 ; C20 English Opening: The Whale