The opening position.
King's pawn game.
Sicilian defence.
Sicilian defence/Kan.
Sicilian defence/Pelikan.
Sicilian defence/Sozin attack.
Sicilian defence/Rossolimo attack.
Sicilian defence/Richter attack.
Sicilian defence/Dragon.
Sicilian defence/Scheveningen.
Sicilian defence/Najdorf.
Sicilian defence/Najdorf/Poisoned pawn.
Sicilian defence/Labourdonnais variation.
Sicilian defence/Lasker variation.
Sicilian defence/Simagin.
Sicilian defence/Alapin's variation.
Sicilian defence/Closed.
Ruy Lopez.
Ruy Lopez/Bird's defence.
Ruy Lopez/Steinitz defence.
Ruy Lopez/Schleimann defence.
Ruy Lopez/Classical defence.
Ruy Lopez/Berlin defence.
Ruy Lopez/Exchange variation.
Ruy Lopez/Modern Steinitz defence.
Ruy Lopez/Open defence.
Ruy Lopez/Closed defence.
Ruy Lopez/Center variation.
Ruy Lopez/Exchange variation deferred.
Ruy Lopez/Worrall attack.
Ruy Lopez/Zaitsev variation.
Ruy Lopez/Smyslov variation.
Giuoco Piano.
Giuoco Piano/Hungarian defence.
Evans gambit.
Two Knights' defence.
Ponziani's opening.
Scotch game.
Four Knights' game.
King's pawn/unusual.
Latvian gambit.
Philidor's defence.
Russian (Petroff) defence.
King's pawn/Mengarini.
King's pawn/Center game.
Bishop's opening.
Vienna game.
King's gambit.
King's gambit declined.
King's gambit/Falkbeer counter-gambit.
French defence.
French defence/Tarrasch variation.
French defence/Advance variation.
French defence/Winawer variation.
Caro-Kann defence.
Caro-Kann defence/Exchange variation.
Caro-Kann defence/Gunderam attack.
Caro-Kann defence/Aggressive system.
Owen's defence.
St. George defence.
Nimzowitsch defence.
Scandinavian (Center-counter) defence.
Alekhine's defence.
Alekhine's defence/Four pawns attack.
Modern defence.
Pirc defence.
Pirc defence/Austrian attack.
Pirc defence/Byrne variation.
Queen's pawn game.
Catalan system.
Bogo-Indian defence.
Queen's Indian defence.
Nimzo-Indian defence.
Budapest defence.
Budapest defence/Fajarowicz variation.
Benoni defence.
Modern Benoni defence.
Volga (Benko) gambit.
English opening.
Queen's pawn game/West defence.
Queen's pawn game/Trompowski attack.
Queen's gambit/Tarrasch defence.
Queen's gambit/Orthodox defence.
Queen's gambit/Semi-Tarrasch defence.
Queen's gambit/Tartakover defence.
Dutch defence.
Queen's gambit.
Queen's gambit/Marshall defence.
Queen's gambit/Rubinstein defence.
Queen's gambit declined.
Queen's gambit/Chigorin defence.
Queen's gambit/Albin counter-gambit.
Queen's gambit/Slav defence.
Queen's gambit/Semi-Slav defence.
Queen's gambit/Anti-Meran system.
Queen's gambit accepted.
Queen's gambit/Semi-Slav.
Queen's gambit/Cambridge Springs defence.
Queen's gambit/Lasker defence.
Old Indian defence.
King's Indian defence.
Gršnfeld defence.
Irregular opening.
Kotroc (Durkin) opening.
Dunst opening.
Amar opening (Paris gambit).
Benko opening.
Larsen opening.
Anderssen opening.
Grob's attack.
Saragossa opening.
Sokolsky opening.
Bird's opening.
Reti opening.
