Openings

Variation
French
    Reversed Philidor formation King's Indian attack Chigorin Variation Two knights Variation Pelikan Variation Wing gambit Labourdonnais Variation Steinitz attack Reti (Spielmann) Variation
    Giuoco Pianissimo
      Canal Variation Italian Four knights Variation Dubois Variation
      Giuoco piano
        Holzhausen attack Rosentreter Variation
        Giuoco Piano
          Moeller, bayonet attack Therkatz-Herzog Variation Moeller (Therkatz) attack Steinitz Variation Aitken Variation Bernstein Variation Greco Variation Greco's attack Cracow Variation Krause Variation Anderssen Variation Ghulam Kassim Variation Bird's attack Eisinger Variation Mestel Variation Tarrasch Variation center-hOlding Variation close Variation LaBourdonnais Variation Jerome gambit Four knights Variation
          Grob
            Spike attack Fritz gambit Romford counter-gambit
            Gruenfeld
              Russian, Keres Variation Russian, Smyslov Variation Russian, Prins Variation Russian, Byrne (Simagin) Variation Russian, Levenfish Variation Russian, Szabo (Boleslavsky) Variation Russian, Alekhine (Hungarian) Variation Russian Variation with e4 Russian Variation Pachman Variation Botvinnik Variation Flohr defense Smyslov defense Opovcensky Variation Makogonov Variation 5.e3 5.Bf4 5.Bg5 Flohr Variation Three knights Variation Schlechter Variation Exchange, Sokolsky Variation Spassky Variation , Main line, 13.Bd3 Spassky Variation , Main line, 10...cd, 11.cd Exchange, Seville Variation Exchange, Spassky Variation Exchange, Simagin's improved Variation Exchange, Simagin's lesser Variation Exchange, Larsen Variation Exchange, Classical Variation Modern Exchange Variation Exchange Variation Gruenfeld gambit accepted Gruenfeld gambit, Botvinnik Variation Gruenfeld gambit, Capablanca Variation Gruenfeld gambit 4.Bf4 Lundin Variation Stockholm Variation Spike gambit
              Gruenfeld defense
                Smyslov, Yugoslav Variation Smyslov, Main line
                Hungarian defense
                  Tartakower Variation
                  KGA
                    Kieseritsky, Rice gambit Kieseritsky, Berlin defense, 6.Bc4 Kieseritsky, Berlin defense, Riviere Variation Kieseritsky, Berlin defense Kieseritsky, Kolisch defense Kieseritsky, Neumann defense Kieseritsky, Polerio defense Kieseritsky, Salvio defense, Cozio Variation Kieseritsky, Salvio (Rosenthal) defense Kieseritsky, Brentano defense, Caro Variation Kieseritsky, Brentano defense Kieseritsky, Brentano defense, Kaplanek Variation Kieseritsky, Brentano (Campbell) defense Kieseritsky, long whip defense, Jaenisch Variation Kieseritsky, long whip (Stockwhip, Classical) defense Kieseritsky, Paulsen defense Allgaier, Schlechter defense Allgaier, Urusov attack Allgaier, Walker attack