Openings

	Variation
QGD	Orthodox defense, Bd3 line, Alekhine Variation Orthodox defense, Bd3 line Orthodox defense, Bd3 line, Janowski Variation Orthodox defense, Bd3 line, Capablanca freeing manoevre Orthodox defense, Bd3 line, Fianchetto Variation Orthodox defense, Rubinstein attack, Main line Orthodox defense, Rubinstein attack, Gruenfeld Variation Orthodox defense, Rubinstein attack, Karlsbad Variation Orthodox defense, Rubinstein attack, Wolf Variation Orthodox defense, Rubinstein attack (with Rc1) Orthodox defense Orthodox defense, Swiss, Karlsbad Variation Orthodox defense, Swiss (Henneberger) Variation Orthodox defense, Capablanca Variation Orthodox defense, Pillsbury attack Orthodox defense, 7.Rc1 Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein) Orthodox defense, Rubinstein Variation Orthodox defense, Rauzer Variation Orthodox defense, Botvinnik Variation Tartakower Variation Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5 Tartakower (Makagonov-Bondarevsky) system Lasker defense, Bernstein Variation Lasker defense, Main line Lasker defense, Russian Variation Lasker defense, Teichmann Variation Lasker defense Neo-Orthodox Variation , 7.Bh4 Petrosian Variation Neo-Orthodox Variation , 7.Bxf6 Neo-Orthodox Variation Pillsbury attack 6.Nf3 Anti-neo-Orthodox Variation 4.Bg5 Be7, 5.e3 O-O Lasker Variation 4.Bg5 Be7 Cambridge Springs defense, Yugoslav Variation Cambridge Springs defense, 7.cd Cambridge Springs defense, Capablanca Variation Cambridge Springs defense, Rubinstein Variation Cambridge Springs defense, Argentine Variation Cambridge Springs defense, Bogoljubow Variation Cambridge Springs defense Capablanca anti-Cambridge Springs Variation 5...c6 Manhattan Variation Alekhine Variation Rochlin Variation 4.Bg5 Nbd7 Canal (Venice) Variation Semi-Tarrasch Semi-Tarrasch, Primitive Pillsbury Variation Semi-Tarrasch, Krause Variation Been-Koomen Variation 4.Bg5 Semi-Tarrasch, 7.Bd3 Semi-Tarrasch with e3 Semi-Tarrasch, San Sebastian Variation Semi-Tarrasch, Kmoch Variation Semi-Tarrasch, 5.cd Semi-Tarrasch defense, Pillsbury Variation Semi-Tarrasch, Levenfish Variation Semi-Tarrasch, Symmetrical Variation Semi-Tarrasch defense Ragozin, Vienna Variation Ragozin Variation Classical Variation (5.Bf4) 4.Nf3 Exchange, positional line, 6.Qc2 Exchange, positional line, 5...c6 Exchange, chameleon Variation Exchange, positional line Exchange, Saemisch Variation Exchange Variation Harrwitz attack 3...Nf6 Tarrasch, Stoltz Variation Tarrasch, Bogolyubov Variation Tarrasch, Prague Variation , 9.Bg5 Tarrasch, Reti Variation Tarrasch, Prague Variation , Normal position Tarrasch, Prague Variation , 7...Be7 Tarrasch, Wagner Variation Tarrasch, Prague Variation Tarrasch, Schlechter-Rubinstein system, Rey Ardid Variation Tarrasch, Folkestone (Swedish) Variation Tarrasch, Schlechter-Rubinstein system Tarrasch defense Tarrasch defense, Marshall gambit Tarrasch defense, Tarrasch gambit Tarrasch defense, 4.cd ed Tarrasch, von Hennig-Schara gambit Semi-Slav, Marshall gambit Semi-Slav, Abrahams Variation Semi-Slav, Junge Variation Semi-Slav, Koomen Variation Semi-Slav, Noteboom Variation Semi-Slav