♞ 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
Semi-Slav Defense: Hastings VariationD4313
Semi-Slav Defense: Moscow VariationD4312
Semi-Slav Defense AcceptedD4410
Semi-Slav Defense: Botvinnik VariationD4411
Semi-Slav Defense: Botvinnik VariationD4417
Semi-Slav Defense: Botvinnik Variation, Alatortsev SystemD4418
Semi-Slav Defense: Botvinnik Variation, Ekstrom VariationD4419
Semi-Slav Defense: Botvinnik Variation, Lilienthal VariationD4421
Semi-Slav Defense: Botvinnik Variation, Szabo VariationD4421
Semi-Slav Defense: Accelerated Meran VariationD4510
Semi-Slav Defense: Main LineD459
Semi-Slav Defense: Normal VariationD4510
Semi-Slav Defense: Normal VariationD4514
Semi-Slav Defense: Normal VariationD4515
Semi-Slav Defense: Rubinstein SystemD4511
Semi-Slav Defense: Stoltz VariationD4511
Semi-Slav Defense: Stoltz VariationD4513
Semi-Slav Defense: Stoltz VariationD4514
Semi-Slav Defense: Stoltz VariationD4513
Semi-Slav Defense: Stoltz VariationD4515
Semi-Slav Defense: Stoltz Variation, Center VariationD4513
Semi-Slav Defense: Stoltz Variation, Center Variation, Mikhalchishin LineD4519
Semi-Slav Defense: Stoltz Variation, Shabalov AttackD4513
Semi-Slav Defense: Stonewall DefenseD4512
Semi-Slav Defense: Bogoljubow VariationD4612
Semi-Slav Defense: Chigorin DefenseD4612
Semi-Slav Defense: Chigorin DefenseD4613
Semi-Slav Defense: Chigorin DefenseD4615
Semi-Slav Defense: Chigorin DefenseD4615
Semi-Slav Defense: Chigorin DefenseD4617
Semi-Slav Defense: Chigorin DefenseD4617
Semi-Slav Defense: Chigorin DefenseD4619
Semi-Slav Defense: Chigorin DefenseD4621
Semi-Slav Defense: Main LineD4611
Semi-Slav Defense: Main LineD4619
Semi-Slav Defense: Romih VariationD4612
Semi-Slav Defense: Meran VariationD4714
Semi-Slav Defense: Meran Variation, Lundin VariationD4716
Semi-Slav Defense: Meran Variation, Wade VariationD4716
Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov GambitD4725
Semi-Slav Defense: Meran Variation, Wade Variation, Larsen VariationD4722
Semi-Slav Defense: Semi-Meran VariationD4713
Semi-Slav Defense: Meran VariationD4816
Semi-Slav Defense: Meran VariationD4818
Semi-Slav Defense: Meran Variation, Old VariationD4819
Semi-Slav Defense: Meran Variation, Pirc VariationD4818
Semi-Slav Defense: Meran Variation, Reynolds' VariationD4819
Semi-Slav Defense: Meran Variation, Blumenfeld VariationD4921
Semi-Slav Defense: Meran Variation, Rabinovich VariationD4922
Semi-Slav Defense: Meran Variation, Rellstab AttackD4929
Semi-Slav Defense: Meran Variation, Sozin VariationD4922
Semi-Slav Defense: Meran Variation, Sozin VariationD4925
Semi-Slav Defense: Meran Variation, Stahlberg VariationD4925
Queen's Gambit Declined: Been-Koomen VariationD508
Queen's Gambit Declined: Modern VariationD507
Queen's Gambit Declined: Pseudo-Tarrasch VariationD509
Queen's Gambit Declined: Pseudo-Tarrasch Variation, Canal VariationD5010
Queen's Gambit Declined: Pseudo-Tarrasch Variation, Primitive Pillsbury VariationD5011
Queen's Gambit Declined: Semi-Tarrasch Defense, Krause VariationD5015
Queen's Gambit Declined: Alekhine VariationD5111
Queen's Gambit Declined: Capablanca Variation, Anti-Cambridge Springs VariationD5111
Queen's Gambit Declined: Manhattan VariationD5110
Queen's Gambit Declined: Modern Variation, Knight DefenseD518
Queen's Gambit Declined: Modern Variation, Knight DefenseD519
Queen's Gambit Declined: Modern Variation, Knight DefenseD5110
Queen's Gambit Declined: Rochlin VariationD5113
Queen's Gambit DeclinedD5211
Queen's Gambit Declined: Cambridge Springs DefenseD5212
Queen's Gambit Declined: Cambridge Springs DefenseD5213
Queen's Gambit Declined: Cambridge Springs Defense, Argentine VariationD5217
Queen's Gambit Declined: Cambridge Springs Defense, Bogoljubow VariationD5215
Queen's Gambit Declined: Cambridge Springs Defense, Capablanca VariationD5213
Queen's Gambit Declined: Cambridge Springs Defense, Rubinstein VariationD5214
Queen's Gambit Declined: Cambridge Springs Defense, Yugoslav VariationD5214
Queen's Gambit DeclinedD538
Queen's Gambit DeclinedD539
Queen's Gambit DeclinedD5313
Queen's Gambit DeclinedD5310
Queen's Gambit DeclinedD5311
Queen's Gambit DeclinedD5312
Queen's Gambit Declined: Lasker DefenseD5310
Queen's Gambit Declined: Modern Variation, Heral VariationD539
Queen's Gambit Declined: Uhlmann VariationD5314
Queen's Gambit Declined: Neo-Orthodox VariationD5411
Queen's Gambit Declined: Anti-Tartakower VariationD5513
Queen's Gambit Declined: Anti-Tartakower Variation, Petrosian VariationD5521
Queen's Gambit Declined: Modern Variation, Normal LineD5511
Queen's Gambit Declined: Neo-Orthodox VariationD5512
Queen's Gambit Declined: Neo-Orthodox Variation, Main LineD5513
Queen's Gambit Declined: Pillsbury AttackD5517
Queen's Gambit DeclinedD5615
Queen's Gambit Declined: Lasker DefenseD5614
Queen's Gambit Declined: Lasker DefenseD5616
Queen's Gambit Declined: Lasker Defense, Russian VariationD5626
Queen's Gambit Declined: Lasker Defense, Teichmann VariationD5617
Queen's Gambit Declined: Lasker Defense, Bernstein VariationD5722
Queen's Gambit Declined: Lasker Defense, Bernstein Variation, Mar del Plata GambitD5724
Queen's Gambit Declined: Lasker Defense, Main LineD5719
Queen's Gambit Declined: Tartakower DefenseD5814
Queen's Gambit Declined: Tartakower Defense, Exchange VariationD5816

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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