Chess Openings

Alekhine Defense
Benoni Defense
Bogo-Indian Defense
Caro-Kann Defense
Catalan Opening
Dutch Defense
English Opening
Four Knights Game
French Defense
Grünfeld Defense
Italian Game
King's Gambit Accepted
King's Gambit Declined
King's Indian Attack
King's Indian Defense
Modern Defense
Neo-Grünfeld Defense
Nimzo-Indian Defense
Petrov's Defense
Philidor Defense
Pterodactyl Defense
Queen's Gambit Accepted
Queen's Gambit Declined
Queen's Indian Defense
Queen's Pawn Game
Réti Opening
Ruy Lopez
Scotch Game
Semi-Slav Defense
Sicilian Defense
Slav Defense
Tarrasch Defense
Vienna Game

Alekhine Defense

Exchange Variation
Four Pawns Attack
Hunt Variation

Benoni Defense

Classical Variation
Fianchetto Variation
King's Pawn Line

Bogo-Indian Defense

Retreat Variation

Caro-Kann Defense

Classical Variation
Karpov Variation
Panov Attack

Catalan Opening

Closed
Closed Variation
Open Defense

Dutch Defense

Leningrad Variation
Stonewall Variation

English Opening

Agincourt Defense
Anglo-Indian Defense
King's English Variation
Symmetrical Variation

Four Knights Game

Halloween Gambit
Spanish Variation

French Defense

Advance Variation
Classical Variation
McCutcheon Variation
Steinitz Variation
Tarrasch Variation
Winawer Variation

Grünfeld Defense

Exchange Variation
Three Knights Variation

Italian Game

Classical Variation
Evans Gambit
Evans Gambit Declined
Giuoco Pianissimo
Giuoco Piano
Scotch Gambit
Two Knights Defense

King's Gambit Accepted

Allgaier
Bishop's Gambit
Double Muzio Gambit
Greco Gambit
Kieseritzky
Kieseritzky Gambit

King's Gambit Declined

Classical
Falkbeer Countergambit

King's Indian Attack

Sicilian Variation

King's Indian Defense

Fianchetto Variation
Four Pawns Attack
Orthodox Variation
Sämisch Variation

Modern Defense

Semi-Averbakh Variation

Neo-Grünfeld Defense

Delayed Exchange Variation

Nimzo-Indian Defense

Classical Variation
Normal Variation
Sämisch Variation
St. Petersburg Variation

Petrov's Defense

Classical Attack

Philidor Defense

Lion Variation

Pterodactyl Defense

Central
Fianchetto
Western

Queen's Gambit Accepted

Classical
Classical Defense

Queen's Gambit Declined

Anti-Tartakower Variation
Cambridge Springs Defense
Capablanca Variation
Exchange Variation
Harrwitz Attack
Lasker Defense
Orthodox Defense
Semi-Tarrasch Defense
Tarrasch Defense
Tartakower Defense

Queen's Pawn Game

Colle System
Torre Attack

Réti Opening

Anglo-Slav Variation

Ruy Lopez

Berlin Defense
Closed
Marshall Attack
Morphy Defense
Noah's Ark Trap
Open

Scotch Game

Gottschall Variation

Semi-Slav Defense

Botvinnik Variation
Chigorin Defense
Meran Variation
Normal Variation
Stoltz Variation

Sicilian Defense

Accelerated Dragon
Alapin Variation
Closed
Delayed Alapin Variation
Dragon Variation
Kan Variation
Moscow Variation
Najdorf Variation
Richter-Rauzer Variation
Scheveningen Variation
Smith-Morra Gambit Accepted
Sozin Attack
Taimanov Variation

Slav Defense

Czech Variation
Exchange Variation

Tarrasch Defense

Classical Variation

Vienna Game

Stanley Variation