Openings

149 opening families and 3,803 named variations, each with live master-game statistics.

A

Alekhine Defense56 lines Amar Opening3 lines Amazon Attack2 lines Amsterdam AttackA00 Anderssen's Opening2 lines Australian DefenseA40

B

Barnes DefenseB00 Barnes Opening6 lines Basque OpeningA45 Benko Gambit8 lines Benko Gambit Accepted10 lines Benko Gambit Declined6 lines Benoni Defense61 lines Bird Opening28 lines Bishop's Opening41 lines Blackmar-Diemer Gambit18 lines Blackmar-Diemer Gambit Accepted22 lines Blackmar-Diemer Gambit Declined9 lines Blumenfeld Countergambit3 lines Blumenfeld Countergambit AcceptedE10 Bogo-Indian Defense21 lines Bongcloud AttackC20 Borg Defense5 lines

C

Canard OpeningA45 Caro-Kann Defense110 lines Carr Defense2 lines Catalan Opening32 lines Center Game18 lines Center Game AcceptedC21 Clemenz Opening2 lines Colle System3 lines Creepy Crawly FormationA00 Czech DefenseB07

D

Danish GambitC21 Danish Gambit Accepted6 lines Danish Gambit DeclinedC21 Döry DefenseA46 Dresden OpeningC44 Duras GambitB00 Dutch Defense69 lines

E

East Indian DefenseA48 Elephant Gambit4 lines English Defense7 lines English Opening175 lines English Orangutan2 lines Englund Gambit9 lines Englund Gambit Declined7 lines

F

Formation2 lines Four Knights Game49 lines French Defense212 lines Fried Fox DefenseB00

G

Global OpeningA00 Goldsmith Defense2 lines Grob Opening20 lines Grünfeld Defense59 lines Gunderam DefenseC40

H

Hippopotamus Defense2 lines Horwitz Defense2 lines Hungarian Opening20 lines

I

Indian Defense53 lines Irish GambitC44 Italian Game184 lines

K

Kádas Opening9 lines Kangaroo Defense2 lines King's GambitC30 King's Gambit Accepted137 lines King's Gambit Declined53 lines King's Indian Attack20 lines King's Indian Attack, with Bf55 lines King's Indian Attack, with e62 lines King's Indian Defense119 lines King's Knight Opening3 lines King's Pawn Game38 lines King's Pawn Opening3 lines

L

Lasker Simul SpecialA00 Latvian Gambit17 lines Latvian Gambit Accepted9 lines Lemming DefenseB00 Lion Defense6 lines London System4 lines London System, with Bd3A48 London System, with Be23 lines

M

Marienbad System2 lines Mexican Defense2 lines Mieses Opening4 lines Mikenas Defense4 lines Modern Defense39 lines Montevideo DefenseA40

N

Neo-Grünfeld Defense16 lines Nimzo-Indian Defense99 lines Nimzo-Larsen Attack18 lines Nimzowitsch Defense43 lines

O

Old Indian Defense14 lines Owen Defense8 lines

P

Paleface AttackA45 Petrov's Defense50 lines Philidor Defense44 lines Pirc Defense28 lines Polish Defense2 lines Polish Opening25 lines Polish Opening, with d52 lines Ponziani Opening16 lines Portuguese Opening3 lines Pseudo Queen's Indian Defense2 lines Pterodactyl Defense33 lines

Q

Queen's GambitD06 Queen's Gambit Accepted58 lines Queen's Gambit Declined198 lines Queen's Indian AcceleratedA50 Queen's Indian Defense53 lines Queen's Indian Defense, with e314 lines Queen's Indian Defense, with e3, Bb4+ LineE14 Queen's Pawn Game82 lines Queen's Pawn, Mengarini AttackE60

R

Rapport-Jobava System3 lines Rapport-Jobava System, with e6D01 Rat Defense11 lines Réti Opening43 lines Richter-Veresov Attack8 lines Robatsch DefenseA41 Rubinstein Opening6 lines Ruy Lopez234 lines

S

Saragossa OpeningA00 Scandinavian Defense45 lines Scotch Game53 lines Semi-Slav Defense69 lines Semi-Slav Defense AcceptedD44 Sicilian Defense388 lines Slav Defense52 lines Slav Indian2 lines Sodium Attack4 lines St. George Defense4 lines

T

Tarrasch Defense27 lines Three Knights Opening6 lines Torre Attack6 lines Trompowsky Attack10 lines

V

Valencia OpeningA00 Van Geet Opening33 lines Van't Kruijs Opening5 lines Vienna Gambit, with Max Lange Defense15 lines Vienna Game41 lines Vulture DefenseA56

W

Wade DefenseA41 Ware Defense2 lines Ware Opening7 lines

Y

Yusupov-Rubinstein SystemA46

Z

Zaire DefenseA40 Zukertort Defense2 lines Zukertort Opening47 lines