♞ 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)

B — Semi-open games

NameECOMoves
Sicilian Defense: Taimanov Variation, Szén VariationB449
Sicilian Defense: Four Knights VariationB4510
Sicilian Defense: Four Knights Variation, American AttackB4513
Sicilian Defense: Four Knights Variation, Cobra VariationB4512
Sicilian Defense: Four Knights Variation, Exchange VariationB4511
Sicilian Defense: Four Knights Variation, Sveshnikov TransferB4512
Sicilian Defense: Taimanov VariationB459
Sicilian Defense: Taimanov VariationB4610
Sicilian Defense: Taimanov Variation, Bastrikov VariationB4710
Sicilian Defense: Taimanov Variation, Bastrikov Variation, Ponomariov GambitB4715
Sicilian Defense: Taimanov Variation, Bastrikov Variation, English AttackB4811
Sicilian Defense: Taimanov Variation, Bastrikov VariationB4913
Sicilian DefenseB505
Sicilian DefenseB506
Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Double GambitB5017
Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik GambitB5012
Sicilian Defense: Delayed Alapin Variation, with d6B505
Sicilian Defense: Kopec SystemB505
Sicilian Defense: Kotov GambitB506
Sicilian Defense: Modern VariationsB504
Sicilian Defense: Modern Variations, Anti-Qxd4 Move OrderB506
Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order AcceptedB508
Sicilian Defense: Modern Variations, TartakowerB507
Sicilian Defense: Wing Gambit, Deferred VariationB505
Sicilian Defense: Moscow VariationB515
Sicilian Defense: Moscow Variation, Dorfman GambitB5111
Sicilian Defense: Moscow Variation, Moscow GambitB5117
Sicilian Defense: Moscow Variation, Haag GambitB5213
Sicilian Defense: Moscow Variation, Main LineB526
Sicilian Defense: Moscow Variation, Sokolsky VariationB529
Sicilian Defense: Chekhover VariationB537
Sicilian Defense: Chekhover Variation, Zaitsev DefenseB5310
Sicilian Defense: Dragon Variation, Accelerated DragonB548
Sicilian Defense: Modern Variations, Ginsberg GambitB549
Sicilian Defense: Modern Variations, Main LineB548
Sicilian Defense: Prins VariationB549
Sicilian Defense: Prins Variation, Venice AttackB5511
Sicilian Defense: Classical VariationB5610
Sicilian Defense: Classical Variation, Fianchetto VariationB5611
Sicilian Defense: Kupreichik VariationB5610
Sicilian Defense: Spielmann VariationB5611
Sicilian Defense: Venice AttackB5611
Sicilian Defense: Classical Variation, Anti-Sozin VariationB5712
Sicilian Defense: Classical Variation, Sozin AttackB5711
Sicilian Defense: Magnus Smith TrapB5715
Sicilian Defense: Boleslavsky VariationB5812
Sicilian Defense: Boleslavsky Variation, Louma VariationB5813
Sicilian Defense: Classical VariationB5811
Sicilian Defense: Classical Variation, Dragon TransferB5814
Sicilian Defense: Boleslavsky VariationB5913
Sicilian Defense: Richter-Rauzer VariationB6011
Sicilian Defense: Richter-Rauzer Variation, Dragon VariationB6012
Sicilian Defense: Richter-Rauzer Variation, Modern VariationB6012
Sicilian Defense: Richter-Rauzer Variation, Modern VariationB6113
Sicilian Defense: Richter-Rauzer VariationB6212
Sicilian Defense: Richter-Rauzer VariationB6213
Sicilian Defense: Richter-Rauzer Variation, Exchange VariationB6213
Sicilian Defense: Richter-Rauzer Variation, Podebrady VariationB6213
Sicilian Defense: Richter-Rauzer Variation, Vitolins VariationB6213
Sicilian Defense: Richter-Rauzer Variation, Classical VariationB6314
Sicilian Defense: Richter-Rauzer Variation, Classical Variation, Kantscher LineB6320
Sicilian Defense: Richter-Rauzer Variation, Ivanov VariationB6314
Sicilian Defense: Richter-Rauzer Variation, Traditional VariationB6313
Sicilian Defense: Richter-Rauzer Variation, Classical VariationB6418
Sicilian Defense: Richter-Rauzer Variation, Classical VariationB6417
Sicilian Defense: Richter-Rauzer Variation, Classical VariationB6519
Sicilian Defense: Richter-Rauzer Variation, Rauzer AttackB6518
Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early DeviationsB6614
Sicilian Defense: Richter-Rauzer Variation, Neo-Modern VariationB6716
Sicilian Defense: Richter-Rauzer Variation, Neo-Modern VariationB6818
Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov AttackB6921
Sicilian Defense: Dragon VariationB7010
Sicilian Defense: Dragon Variation, Classical VariationB7011
Sicilian Defense: Dragon Variation, Fianchetto VariationB7011
Sicilian Defense: Dragon Variation, Levenfish VariationB7111
Sicilian Defense: Dragon Variation, Levenfish Variation, Main LineB7112
Sicilian Defense: Dragon VariationB7211
Sicilian Defense: Dragon Variation, Classical VariationB7213
Sicilian Defense: Dragon Variation, Classical VariationB7214
Sicilian Defense: Dragon Variation, Classical VariationB7215
Sicilian Defense: Dragon Variation, Classical Variation, Amsterdam VariationB7215
Sicilian Defense: Dragon Variation, Classical Variation, Grigoriev VariationB7217
Sicilian Defense: Dragon Variation, Classical VariationB7315
Sicilian Defense: Dragon Variation, Classical Variation, Battery VariationB7317
Sicilian Defense: Dragon Variation, Classical Variation, Zollner GambitB7319
Sicilian Defense: Dragon Variation, Classical Variation, Alekhine LineB7418
Sicilian Defense: Dragon Variation, Classical Variation, Bernard DefenseB7426
Sicilian Defense: Dragon Variation, Classical Variation, Maróczy LineB7420
Sicilian Defense: Dragon Variation, Classical Variation, Normal LineB7417
Sicilian Defense: Dragon Variation, Classical Variation, Spielmann VariationB7423
Sicilian Defense: Dragon Variation, Classical Variation, Stockholm AttackB7427
Sicilian Defense: Dragon Variation, Classical Variation, Tartakower LineB7420
Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky LineB7514
Sicilian Defense: Dragon Variation, Yugoslav Attack, Early DeviationsB7513
Sicilian Defense: Dragon Variation, Yugoslav Attack, Hungarian DragonB7514
Sicilian Defense: Dragon Variation, Yugoslav AttackB7614
Sicilian Defense: Dragon Variation, Yugoslav AttackB7616
Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern LineB7617
Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov VariationB7617
Sicilian Defense: Dragon Variation, Yugoslav Attack, Byrne VariationB7718

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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