Sicilian Defence 2,480 Italian Game 1,246 Queen's Gambit 1,167 London System 1,067 Ruy Lopez 1,050 Slav Defence 1,046 English Opening 983 Nimzo-Indian Defence 971 Queen's Gambit Declined 933 Caro-Kann Defence 877 Colle System 851 Réti Opening 772 French Defence 581 Alekhine's Defence 516 Fianchetto Systems 447 King's Indian Defence 348 Scandinavian Defence 329 Grünfeld Defence 320 King's Gambit 317 Petrov Defence 316 Catalan Opening 302 Scotch Game 279 Four Knights Game 265 Benoni Defence 260 Vienna Game 253 Semi-Slav Defence 242 Pirc Defence 185 Philidor Defence 175 King's Indian Attack 162 Dutch Defence 155 Queen's Indian Defence 148 Alapin Variation 136 Queen's Gambit Accepted 132 Budapest Gambit 129 Benko Gambit 119 Modern Defence 114 Smith-Morra Gambit 108 Scotch Gambit 105 Torre Attack 97 Polish Opening 96 Trompowsky Attack 89 Hippo Defence 83 King's Gambit Accepted 50 Grand Prix Attack 44 Bogo-Indian Defence 40 Bird's Opening 36 Cow Opening 27 King's Gambit Declined 19 Glek System 6

Berlin Defence 314 Two Knights 299 Najdorf Variation 219 Giuoco Piano 211 Evans Gambit 180 Dragon Variation 177 Fried Liver Attack 159 Winawer Variation 152 Scheveningen 118 Jobava 110 Sveshnikov 96 Marshall Attack 38 Taimanov 32 Kan Variation 16 Bird Variation 9 Advance Variation 8 Stonewall 7 Exchange Variation 4 Paulsen 3 Tarrasch Variation 3 Leningrad Variation 2 Advance Variation 1