Openings

	Variation
Ruy Lopez	Modern Steinitz defense, Three knights Variation Schliemann defense deferred Taimanov (chase/wing/Accelerated counterthrust) Variation Graz Variation Caro Variation Classical defense deferred Alapin's defense deferred Bird's defense deferred Cozio defense deferred Fianchetto defense deferred Exchange, Bronstein Variation Exchange, Gligoric Variation Exchange Variation , Alapin gambit Exchange Variation , 5.O-O Exchange, Romanovsky Variation Exchange, Keres Variation Exchange, Alekhine Variation Exchange Variation Berlin defense, Rosenthal Variation Berlin defense, Minckwitz Variation Berlin defense, Trifunovic Variation Berlin defense, Cordel Variation Berlin defense, Winawer attack Berlin defense, Pillsbury Variation Berlin defense, Zukertort Variation Berlin defense, Rio de Janeiro Variation Open Berlin defense, 5...Be7 Open Berlin defense, Showalter Variation Open Berlin defense, l'Hermet Variation Berlin defense, Open Variation Closed Berlin defense, Chigorin Variation Closed Berlin defense, Wolf Variation Closed Berlin defense, Showalter Variation Closed Berlin defense, Bernstein Variation Berlin defense, Tarrasch trap Berlin defense, hedgehog Variation Berlin defense, 4.O-O, d6 Berlin defense, Beverwijk Variation Berlin defense, 4.O-O Berlin defense, Kaufmann Variation Berlin defense, Duras Variation Berlin defense, Anderssen Variation Berlin defense, Mortimer trap Berlin defense, Mortimer Variation Berlin defense, Nyholm attack Berlin defense Cordel gambit Classical defense, Boden Variation Classical defense, Charousek Variation Classical defense, Benelux Variation Classical defense, 4.c3 Classical defense, Zaitsev Variation Classical (Cordel) defense Schliemann defense, Berger Variation Schliemann defense Old Steinitz defense, Semi-Duras Variation Old Steinitz defense, Nimzovich attack Old Steinitz defense Bird's defense, Paulsen Variation Bird's defense Cozio defense, Paulsen Variation Cozio defense Fianchetto (Smyslov/Barnes) defense Closed, Chigorin, 12...c5d4 Closed, Chigorin, Rauzer attack Closed, Chigorin, 12...Nc6 Closed, Chigorin, Yugoslav system Closed, Chigorin defense Closed, Keres (...Nd7) defense Closed, Borisenko defense Closed (10...c5) Closed, Rossolimo defense Closed (8...Na5) Closed, Breyer, Simagin Variation Closed, Breyer, Gligoric Variation Closed, Breyer, Borisenko Variation Closed, Breyer, 10.d4 Closed, Breyer defense Closed, Smyslov defense Closed, Flohr-Zaitsev system (Lenzerheide Variation ) Closed, Ragozin-Petrosian (`Keres') Variation Closed, Kholmov Variation Closed, Keres (9...a5) Variation Closed, 9.h3 Closed, Bogolyubov Variation Closed, 9.d4 Closed, Suetin Variation Closed, Lutikov Variation Closed, Pilnik Variation Closed (with ...d6) Marshall, Herman Steiner Variation Marshall, Main line, Spassky Variation Marshall, Main line, 14...Qh3 Marshall, Main line, 12.d2d4 Marshall, Kevitz Variation Marshall counter-attack, 11...c6 Marshall counter-attack Closed, 8.c3 Closed, anti-Marshall 8.a4 Closed, 7...O-O