Openings

White	Variation
Sicilian	Quinteros Variation Stiletto (Althouse) Variation Closed, 6.Be3 Closed, 6.f4 e5 (Botvinnik) Closed, 6.f4 Closed, 6.Ne2 e5 (Botvinnik) Closed Closed, Smyslov Variation Grand Prix attack, Schofman Variation Grand Prix attack chameleon Variation Closed, 2...Nc6 Closed, Korchnoi Variation 2.c3, Heidenfeld Variation Alapin's Variation (2.c3) Smith-Morra gambit, Chicago defense Smith-Morra gambit Andreaschek gambit Keres Variation (2.Ne2) wing gambit, Carlsbad Variation wing gambit, Marienbad Variation
Three knights	Steinitz, Rosenthal Variation Steinitz Variation Winawer defense (Gothic defense) Schlechter Variation
Two knights	Max Lange attack, Krause Variation Max Lange attack, Steinitz Variation Max Lange attack, Schlechter Variation Max Lange attack, Loman defense Max Lange attack, Rubinstein Variation Max Lange attack, Marshall Variation Max Lange attack, Berger Variation Max Lange attack
Two knights defense	Bogolyubov Variation Maroczy Variation Yankovich Variation Kieseritsky Variation Fegatello attack, Polerio defense Fegatello attack, Leonhardt Variation Fegatello attack Pincus Variation Lolli attack Fritz, Gruber Variation Fritz Variation Ulvestad Variation Wilkes Barre (Traxler) Variation Canal Variation Yurdansky attack Steinitz Variation Goering Variation Knorre Variation Blackburne Variation Colman Variation Paoli Variation
Vienna	Alekhine Variation Adams' gambit `Frankenstein-Dracula' Variation Paulsen-Mieses Variation Mengarini Variation Falkbeer Variation Pierce gambit, Rushmere attack Pierce gambit Hamppe-Muzio, Dubois Variation Hamppe-Muzio gambit Hamppe-Allgaier gambit, Alapin Variation Hamppe-Allgaier gambit Steinitz gambit, Fraser-Minckwitz Variation Steinitz gambit, Zukertort defense Steinitz gambit Fyfe gambit Paulsen Variation Zhuravlev countergambit
Vienna gambit	Heyde Variation Bardeleben Variation Paulsen attack Breyer Variation Kaufmann Variation