♞ 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)

C — Open games & French

NameECOMoves
King's Gambit Declined: Falkbeer Countergambit, Charousek GambitC317
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Morphy DefenseC3112
King's Gambit Declined: Falkbeer Countergambit, Hinrichsen GambitC315
King's Gambit Declined: Falkbeer Countergambit, Miles GambitC316
King's Gambit Declined: Falkbeer Countergambit, Milner-Barry VariationC315
King's Gambit Declined: Falkbeer Countergambit, Modern TransferC316
King's Gambit Declined: Falkbeer Countergambit, Nimzowitsch-Marshall CountergambitC316
King's Gambit Declined: Falkbeer Countergambit, Pickler GambitC318
King's Gambit Declined: Falkbeer Countergambit, Rubinstein VariationC319
King's Gambit Declined: Falkbeer Countergambit, Staunton LineC316
Van Geet Opening: Grünfeld Defense, Steiner GambitC317
King's Gambit Declined: Falkbeer Countergambit, Alapin VariationC3217
King's Gambit Declined: Falkbeer Countergambit, Charousek GambitC3211
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit AcceptedC329
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Keres VariationC329
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Main LineC3214
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Old LineC329
King's Gambit Declined: Falkbeer Countergambit, Charousek VariationC3215
King's Gambit Declined: Falkbeer Countergambit, Tarrasch VariationC3216
King's Gambit AcceptedC334
King's Gambit Accepted: Basman GambitC335
King's Gambit Accepted: Bishop's GambitC335
King's Gambit Accepted: Bishop's Gambit, Anderssen DefenseC336
King's Gambit Accepted: Bishop's Gambit, Anderssen VariationC338
King's Gambit Accepted: Bishop's Gambit, Bledow CountergambitC338
King's Gambit Accepted: Bishop's Gambit, Bledow VariationC336
King's Gambit Accepted: Bishop's Gambit, Boden VariationC338
King's Gambit Accepted: Bishop's Gambit, Bogoljubow DefenseC338
King's Gambit Accepted: Bishop's Gambit, Bogoljubow VariationC337
King's Gambit Accepted: Bishop's Gambit, Boren-Svenonius VariationC3310
King's Gambit Accepted: Bishop's Gambit, Bryan CountergambitC338
King's Gambit Accepted: Bishop's Gambit, Chigorin's AttackC3311
King's Gambit Accepted: Bishop's Gambit, Classical DefenseC3312
King's Gambit Accepted: Bishop's Gambit, Classical Defense, Cozio AttackC339
King's Gambit Accepted: Bishop's Gambit, Cozio DefenseC336
King's Gambit Accepted: Bishop's Gambit, Cozio VariationC338
King's Gambit Accepted: Bishop's Gambit, First Jaenisch VariationC338
King's Gambit Accepted: Bishop's Gambit, Fraser VariationC3313
King's Gambit Accepted: Bishop's Gambit, Gianutio GambitC336
King's Gambit Accepted: Bishop's Gambit, Greco VariationC338
King's Gambit Accepted: Bishop's Gambit, Grimm AttackC3313
King's Gambit Accepted: Bishop's Gambit, Kieseritzky GambitC336
King's Gambit Accepted: Bishop's Gambit, Lopez DefenseC336
King's Gambit Accepted: Bishop's Gambit, Lopez VariationC338
King's Gambit Accepted: Bishop's Gambit, Maurian DefenseC336
King's Gambit Accepted: Bishop's Gambit, McDonnell AttackC3313
King's Gambit Accepted: Bishop's Gambit, McDonnell AttackC3311
King's Gambit Accepted: Bishop's Gambit, Paulsen AttackC339
King's Gambit Accepted: Bishop's Gambit, Steinitz DefenseC336
King's Gambit Accepted: Breyer GambitC335
King's Gambit Accepted: Carrera GambitC335
King's Gambit Accepted: Dodo VariationC335
King's Gambit Accepted: Eisenberg VariationC335
King's Gambit Accepted: Gaga GambitC335
King's Gambit Accepted: Lopez-Gianutio Countergambit, Hein VariationC3312
King's Gambit Accepted: Mason-Keres GambitC335
King's Gambit Accepted: Orsini GambitC335
King's Gambit Accepted: Paris GambitC335
King's Gambit Accepted: Schurig Gambit, with Bb5C335
King's Gambit Accepted: Schurig Gambit, with Bd3C335
King's Gambit Accepted: Stamma GambitC335
King's Gambit Accepted: Tartakower GambitC335
King's Gambit Accepted: Tartakower Gambit, Weiss DefenseC338
King's Gambit Accepted: TumbleweedC335
King's Gambit Accepted: Villemson GambitC335
King's Gambit Accepted: Becker DefenseC346
King's Gambit Accepted: Bonsch-Osmolovsky VariationC346
King's Gambit Accepted: Fischer DefenseC346
King's Gambit Accepted: Fischer Defense, Schulder GambitC347
King's Gambit Accepted: Fischer Defense, Spanish VariationC349
King's Gambit Accepted: Gianutio CountergambitC346
King's Gambit Accepted: Greco GambitC3412
King's Gambit Accepted: King's Knight's GambitC346
King's Gambit Accepted: King's Knight's GambitC345
King's Gambit Accepted: MacLeod DefenseC346
King's Gambit Accepted: Schallopp DefenseC346
King's Gambit Accepted: Schallopp Defense, Tashkent AttackC349
King's Gambit Accepted: Wagenbach DefenseC346
King's Gambit Accepted: Cunningham DefenseC356
King's Gambit Accepted: Cunningham Defense, Bertin GambitC359
King's Gambit Accepted: Cunningham Defense, Bertin GambitC3513
King's Gambit Accepted: Cunningham Defense, McCormick DefenseC358
King's Gambit Accepted: Abbazia DefenseC368
King's Gambit Accepted: Abbazia Defense, Main LineC3614
King's Gambit Accepted: Modern DefenseC366
King's Gambit Accepted: Modern DefenseC367
King's Gambit Accepted: Australian GambitC379
King's Gambit Accepted: Blachly GambitC378
King's Gambit Accepted: Double Muzio GambitC3715
King's Gambit Accepted: Double Muzio Gambit, Baldwin GambitC3717
King's Gambit Accepted: Double Muzio Gambit, Bello GambitC3713
King's Gambit Accepted: Double Muzio Gambit, Paulsen DefenseC3721
King's Gambit Accepted: Double Muzio Gambit, Young GambitC3720
King's Gambit Accepted: Ghulam-Kassim GambitC379
King's Gambit Accepted: Ghulam-Kassim GambitC3711
King's Gambit Accepted: King's Knight's GambitC377
King's Gambit Accepted: Kotov GambitC3711
King's Gambit Accepted: Lolli GambitC379
King's Gambit Accepted: Lolli Gambit, Young VariationC3719
King's Gambit Accepted: McDonnell GambitC379

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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