Openings

Variation
Caro-Kann
    Advance Variation Advance, Short Variation Alekhine gambit Anti-anti-Caro-Kann defense Anti-Caro-Kann defense Bronstein-Larsen Variation Classical Variation Classical, 6.h4 Classical, 7...Nd7 Classical, Flohr Variation Classical, Maroczy attack Classical, Spassky Variation Closed (Breyer) Variation Edinburgh Variation Exchange Variation Exchange, Rubinstein Variation Forgacs Variation GOldman (Spielmann) Variation Gurgenidze counter-attack Gurgenidze system Hillbilly attack Panov-Botvinnik attack Panov-Botvinnik attack, 5...e6 Panov-Botvinnik attack, 5...g6 Panov-Botvinnik, Czerniak Variation Panov-Botvinnik, Gunderam attack Panov-Botvinnik, Herzog defense Panov-Botvinnik, normal Variation Panov-Botvinnik, Reifir (Spielmann) Variation Rasa-Studier gambit Steinitz Variation Tartakower (fantasy) Variation Tartakower (Nimzovich) Variation Two knights Variation Two knights, 3...Bg4
    Catalan
      Closed Closed, 5.Nf3 Closed, 6...Nbd7 Closed, 7.Qc2 Closed, Botvinnik Variation Closed, Main line Closed, Qc2 & b3 Closed, Sokolsky Variation Closed, Spassky gambit Closed, Zagoryansky Variation Open, 5.Nf3 Open, 5.Qa4 Open, 5.Qa4 Nbd7, 6.Qxc4 Open, Alekhine Variation Open, Classical line
      center game
        Berger Variation Charousek Variation Hall Variation l'Hermet Variation Paulsen attack
        Czech Benoni
          King's Indian system
          Danish gambit
            Collijn defense Schlechter defense Soerensen defense
            Dutch
              Balogh defense Classical Variation Hort-Antoshin system Ilyin-Genevsky Variation Ilyin-Genevsky Variation with b3 Ilyin-Genevsky Variation with Qc2 Ilyin-Genevsky, Winter Variation Leningrad Variation Leningrad, Basman system Leningrad, Karlsbad Variation Leningrad, Main Variation Leningrad, Main Variation with c6 Leningrad, Main Variation with Nc6 Staunton gambit Staunton gambit deferred Staunton gambit, Alekhine Variation Staunton gambit, Chigorin Variation Staunton gambit, Lasker Variation Staunton gambit, Nimzovich Variation Staunton gambit, Staunton's line Staunton gambit, Tartakower Variation Stonewall Variation Stonewall with Ba3 Stonewall with Nc3 Stonewall, Botwinnik Variation Stonewall: Chekhover Variation
              Dutch defense
                Bladel Variation Dutch-Indian (Nimzo-Dutch) Variation
                English
                  Adorjan defense Anglo-Dutch defense Anglo-Gruenfeld defense Anglo-Gruenfeld defense, Korchnoi Variation Anglo-Gruenfeld, Czech defense Anglo-Gruenfeld, Smyslov defense Bellon gambit Bled Variation Botvinnik system Bradley Beach Variation Bremen system with ...g6 Bremen system, Keres Variation Bremen, reverse Dragon