♞ 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)

D — Closed & semi-closed

NameECOMoves
Queen's Gambit Declined: Semi-Slav, Abrahams VariationD3114
Queen's Gambit Declined: Semi-Slav, Junge VariationD3114
Queen's Gambit Declined: Semi-Slav, Koomen VariationD3114
Semi-Slav Defense: Accelerated Move OrderD316
Semi-Slav Defense: Anti-Noteboom, Stonewall VariationD318
Semi-Slav Defense: Anti-Noteboom, Stonewall Variation, Portisch GambitD319
Semi-Slav Defense: Gunderam GambitD319
Semi-Slav Defense: Marshall GambitD317
Semi-Slav Defense: Marshall Gambit, Forgotten VariationD3111
Semi-Slav Defense: Marshall Gambit, Main LineD3111
Semi-Slav Defense: Marshall Gambit, Tolush VariationD3118
Semi-Slav Defense: Noteboom VariationD318
Semi-Slav Defense: Noteboom Variation, Abrahams VariationD3116
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom GambitD319
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom VariationD319
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky LineD3110
Queen's Gambit Declined: Tarrasch DefenseD328
Queen's Gambit Declined: Tarrasch DefenseD3212
Queen's Gambit Declined: Tarrasch DefenseD3214
Queen's Gambit Declined: Tarrasch DefenseD3214
Tarrasch DefenseD326
Tarrasch Defense: Grünfeld GambitD3214
Tarrasch Defense: Marshall GambitD329
Tarrasch Defense: Schara GambitD328
Tarrasch Defense: Symmetrical VariationD3210
Tarrasch Defense: Symmetrical VariationD3212
Tarrasch Defense: Tarrasch GambitD3212
Tarrasch Defense: Two Knights VariationD329
Tarrasch Defense: von Hennig GambitD3214
Tarrasch Defense: Dubov TarraschD3316
Tarrasch Defense: Prague VariationD3312
Tarrasch Defense: Rubinstein SystemD3311
Tarrasch Defense: Swedish VariationD3312
Tarrasch Defense: Swedish Variation, Central BreakD3313
Tarrasch Defense: Wagner VariationD3314
Queen's Gambit Declined: Tarrasch Defense, Stoltz VariationD3420
Tarrasch Defense: Classical VariationD3416
Tarrasch Defense: Classical Variation, Advance VariationD3418
Tarrasch Defense: Classical Variation, Bogoljubow VariationD3420
Tarrasch Defense: Classical Variation, Carlsbad VariationD3417
Tarrasch Defense: Classical Variation, Chandler VariationD3424
Tarrasch Defense: Classical Variation, Classical Tarrasch GambitD3418
Tarrasch Defense: Classical Variation, Endgame VariationD3418
Tarrasch Defense: Classical Variation, Main LineD3422
Tarrasch Defense: Classical Variation, Petursson VariationD3420
Tarrasch Defense: Classical Variation, Réti VariationD3419
Tarrasch Defense: Classical Variation, Spassky VariationD3422
Tarrasch Defense: Prague Variation, Main LineD3414
Queen's Gambit Declined: Exchange VariationD357
Queen's Gambit Declined: Exchange VariationD3512
Queen's Gambit Declined: Exchange VariationD3514
Queen's Gambit Declined: Exchange Variation, Carlsen VariationD3514
Queen's Gambit Declined: Exchange Variation, Chameleon VariationD3519
Queen's Gambit Declined: Exchange Variation, Positional VariationD359
Queen's Gambit Declined: Exchange Variation, Positional VariationD3510
Queen's Gambit Declined: Exchange Variation, Sämisch VariationD3511
Queen's Gambit Declined: Harrwitz AttackD357
Queen's Gambit Declined: Normal DefenseD356
Queen's Gambit Declined: Exchange Variation, Reshevsky VariationD3611
Queen's Gambit Declined: Exchange Variation, Reshevsky VariationD3615
Queen's Gambit Declined: Exchange Variation, Reshevsky VariationD3615
Queen's Gambit Declined: Exchange Variation, Reshevsky VariationD3617
Queen's Gambit Declined: Barmen VariationD378
Queen's Gambit Declined: Harrwitz AttackD379
Queen's Gambit Declined: Harrwitz AttackD3719
Queen's Gambit Declined: Harrwitz AttackD3719
Queen's Gambit Declined: Harrwitz Attack, Fianchetto DefenseD3712
Queen's Gambit Declined: Harrwitz Attack, Main LineD3714
Queen's Gambit Declined: Harrwitz Attack, Orthodox DefenseD3712
Queen's Gambit Declined: Harrwitz Attack, Two Knights DefenseD3712
Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense, Blockade LineD3713
Queen's Gambit Declined: Knight Defense, Alekhine GambitD3712
Queen's Gambit Declined: Miles VariationD3711
Queen's Gambit Declined: Three Knights VariationD377
Queen's Gambit Declined: Three Knights VariationD3710
Queen's Gambit Declined: Three Knights, Vienna VariationD378
Queen's Gambit Declined: Vienna Variation, Quiet VariationD379
Queen's Gambit Declined: Ragozin DefenseD388
Queen's Gambit Declined: Ragozin Defense, Alekhine VariationD389
Queen's Gambit Declined: Westphalian VariationD3812
Queen's Gambit Declined: Ragozin Defense, Vienna VariationD3910
Queen's Gambit Declined: Semi-Tarrasch DefenseD408
Queen's Gambit Declined: Semi-Tarrasch DefenseD4014
Queen's Gambit Declined: Semi-Tarrasch Defense, Levenfish VariationD4019
Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury VariationD409
Queen's Gambit Declined: Semi-Tarrasch Defense, Symmetrical VariationD4014
Queen's Gambit Declined: Semi-Tarrasch Defense, with e3D4011
Queen's Gambit Declined: Semi-Tarrasch DefenseD4110
Queen's Gambit Declined: Semi-Tarrasch DefenseD419
Queen's Gambit Declined: Semi-Tarrasch DefenseD4111
Queen's Gambit Declined: Semi-Tarrasch DefenseD4113
Queen's Gambit Declined: Semi-Tarrasch Defense, Endgame VariationD4115
Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange VariationD4111
Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange VariationD4113
Queen's Gambit Declined: Semi-Tarrasch Defense, Kmoch VariationD4121
Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury VariationD4111
Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian VariationD4118
Queen's Gambit Declined: Semi-Tarrasch Defense, Main LineD4213
Semi-Slav DefenseD438
Semi-Slav Defense: Anti-Moscow GambitD4311

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