♞ Chess1

Chess Openings

3810 ECO lines with main-line moves and diagrams. Start with the flagship families, or browse by volume.

Flagship openings

Sicilian Defense B20
2 plies in the main line
French Defense C00
2 plies in the main line
English Opening A10
1 plies in the main line
Caro-Kann Defense B10
2 plies in the main line
Queen's Pawn Game A40
1 plies in the main line
Queen's Pawn Game A41
2 plies in the main line
Queen's Pawn Game D00
2 plies in the main line
Dutch Defense A80
2 plies in the main line
Alekhine Defense B02
2 plies in the main line
Indian Defense A45
2 plies in the main line
Zukertort Opening A04
1 plies in the main line
Zukertort Opening A05
2 plies in the main line
Zukertort Opening A06
2 plies in the main line
Scandinavian Defense B01
2 plies in the main line
Réti Opening A09
3 plies in the main line
Nimzowitsch Defense B00
2 plies in the main line
Modern Defense B06
2 plies in the main line
King's Pawn Game B00
1 plies in the main line
King's Pawn Game C20
2 plies in the main line
Van Geet Opening A00
1 plies in the main line
Bird Opening A02
1 plies in the main line
Pirc Defense B00
2 plies in the main line
Polish Opening A00
1 plies in the main line
King's Indian Attack A07
3 plies in the main line

All lines by ECO volume

A — Flank openings (817)B — Semi-open games (772)C — Open games & French (1250)D — Closed & semi-closed (614)E — Indian defenses (357)

A — Flank openings

NameECOMoves
English Defense: Poli GambitA4010
Englund GambitA402
Englund Gambit DeclinedA403
Englund Gambit Declined: Diemer CounterattackA406
Englund Gambit Declined: Reversed AlekhineA403
Englund Gambit Declined: Reversed BrooklynA405
Englund Gambit Declined: Reversed FrenchA403
Englund Gambit Declined: Reversed KrebsA404
Englund Gambit Declined: Reversed Mokele MbembeA405
Englund Gambit: Felbecker GambitA406
Englund Gambit: Hartlaub-Charlick GambitA404
Englund Gambit: Main LineA406
Englund Gambit: Mosquito GambitA404
Englund Gambit: Soller GambitA404
Englund Gambit: Soller Gambit DeferredA406
Englund Gambit: Stockholm VariationA407
Englund Gambit: Zilbermints GambitA406
Horwitz DefenseA402
Horwitz Defense: Zilbermints GambitA404
Kangaroo DefenseA404
Kangaroo Defense: Keres Defense, Transpositional VariationA405
Mikenas DefenseA402
Mikenas Defense: Cannstatter VariationA406
Mikenas Defense: Lithuanian VariationA406
Mikenas Defense: Pozarek GambitA408
Modern Defense: Beefeater VariationA4010
Modern Defense: Lizard Defense, Pirc-Diemer GambitA405
Montevideo DefenseA404
Polish DefenseA402
Polish Defense: Spassky Gambit AcceptedA405
Pterodactyl Defense: Central, Benoni Beefeater PterodactylA4012
Pterodactyl Defense: Central, Benoni PterodactylA408
Pterodactyl Defense: Fianchetto, Queen Benoni PterodactylA408
Pterodactyl Defense: Fianchetto, Queen PteranodonA4010
Pterodactyl Defense: Fianchetto, Queen PterodactylA408
Pterodactyl Defense: Queen Pterodactyl, Quiet LineA407
Queen's Pawn GameA401
Queen's Pawn Game: Anglo-Slav OpeningA404
Queen's Pawn Game: Modern DefenseA402
Slav Indian: Kudischewitsch GambitA406
Zaire DefenseA408
Modern DefenseA416
Modern Defense: Neo-Modern DefenseA416
Old Indian DefenseA413
Queen's Pawn GameA412
Queen's Pawn Game: Rossolimo VariationA414
Rat Defense: English RatA414
Rat Defense: English Rat, Lisbon GambitA416
Rat Defense: English Rat, Pounds GambitA416
Robatsch Defense: Rossolimo VariationA418
Wade DefenseA414
Zukertort Opening: Wade Defense, Chigorin PlanA418
Modern Defense: Averbakh SystemA427
Modern Defense: Averbakh Variation, Pseudo-SämischA429
Modern Defense: Kotov VariationA428
Modern Defense: Randspringer VariationA428
Pterodactyl DefenseA4210
Pterodactyl Defense: Central, BogoluboviaA4210
Benoni Defense: Benoni Gambit AcceptedA433
Benoni Defense: Benoni Gambit, Schlenker DefenseA434
Benoni Defense: Benoni-Indian DefenseA434
Benoni Defense: Benoni-Indian Defense, Kingside Move OrderA435
Benoni Defense: Benoni-Staunton GambitA435
Benoni Defense: Cormorant GambitA434
Benoni Defense: French BenoniA435
Benoni Defense: Hawk VariationA436
Benoni Defense: Old BenoniA432
Benoni Defense: Old BenoniA433
Benoni Defense: Old BenoniA434
Benoni Defense: Old Benoni, Mujannah FormationA434
Benoni Defense: Old Benoni, Schmid VariationA436
Benoni Defense: Snail VariationA434
Benoni Defense: WoozleA436
Benoni Defense: Zilbermints-Benoni GambitA433
Benoni Defense: Zilbermints-Benoni GambitA435
Benoni Defense: Zilbermints-Benoni Gambit, Tamarkin CountergambitA436
Indian Defense: Pseudo-BenkoA436
Queen's Pawn Game: Liedmann GambitA435
Benoni Defense: Old BenoniA444
Benoni Defense: Semi-BenoniA446
Amazon Attack: Siberian AttackA455
Basque OpeningA453
Canard OpeningA453
Indian DefenseA452
Indian Defense: Accelerated London SystemA453
Indian Defense: Gedult AttackA455
Indian Defense: Gibbins-Weidenhagen GambitA453
Indian Defense: Gibbins-Weidenhagen Gambit AcceptedA454
Indian Defense: Gibbins-Weidenhagen Gambit, Maltese FalconA457
Indian Defense: Gibbins-Weidenhagen Gambit, Oshima DefenseA454
Indian Defense: Gibbins-Weidenhagen Gambit, Stummer GambitA459
Indian Defense: Lazard GambitA454
Indian Defense: Maddigan GambitA454
Indian Defense: Omega GambitA453
Indian Defense: Omega Gambit, Arafat GambitA457
Indian Defense: Paleface Attack, Blackmar-Diemer Gambit DeferredA455
Indian Defense: Pawn Push VariationA453
Indian Defense: Reversed Chigorin DefenseA454
Indian Defense: Tartakower AttackA453
Paleface AttackA453

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Family pages group related lines: the family head with a diagram, main continuations and every catalogued variation.

Volume A Volume B Volume C Volume D Volume E Gambits Defenses