♞ 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 Pawn Game: Tayler OpeningC447
King's Pawn Game: Tayler Opening, Basman GambitC449
King's Pawn Game: Tayler Opening, Inverted HanhamC449
Latvian Gambit: Clam GambitC447
Ponziani OpeningC445
Ponziani Opening: Caro GambitC448
Ponziani Opening: Jaenisch CounterattackC446
Ponziani Opening: Jaenisch CounterattackC447
Ponziani Opening: Jaenisch CounterattackC448
Ponziani Opening: Jaenisch CounterattackC449
Ponziani Opening: Leonhardt VariationC448
Ponziani Opening: Neumann GambitC447
Ponziani Opening: Ponziani CountergambitC446
Ponziani Opening: Ponziani Countergambit, Schmidt AttackC449
Ponziani Opening: Romanishin VariationC446
Ponziani Opening: Réti VariationC446
Ponziani Opening: Spanish VariationC447
Ponziani Opening: Spanish Variation, Harrwitz Attack, Nikitin GambitC4411
Ponziani Opening: Steinitz VariationC448
Ponziani Opening: Vukovic GambitC4410
Scotch GameC445
Scotch GameC446
Scotch Game: Benima DefenseC448
Scotch Game: Cochrane VariationC4413
Scotch Game: Cochrane-Shumov DefenseC4418
Scotch Game: Göring GambitC447
Scotch Game: Göring Gambit, Bardeleben VariationC4412
Scotch Game: Göring Gambit, Double Pawn SacrificeC449
Scotch Game: Göring Gambit, Main LineC4410
Scotch Game: Hanneken VariationC4418
Scotch Game: Haxo GambitC448
Scotch Game: Lolli VariationC446
Scotch Game: Lolli VariationC449
Scotch Game: Napoleon GambitC449
Scotch Game: Relfsson GambitC447
Scotch Game: Scotch GambitC447
Scotch Game: Scotch Gambit, Advance VariationC449
Scotch Game: Scotch Gambit, Cochrane-Anderssen VariationC4412
Scotch Game: Scotch Gambit, Dubois Réti DefenseC448
Scotch Game: Scotch Gambit, Göring Gambit DeclinedC448
Scotch Game: Scotch Gambit, Kingside VariationC4410
Scotch Game: Scotch Gambit, London DefenseC448
Scotch Game: Scotch Gambit, Sarratt VariationC449
Scotch Game: Sea-Cadet MateC4419
Scotch Game: Vitzthum AttackC4411
Scotch GameC457
Scotch GameC4511
Scotch Game: Alekhine GambitC459
Scotch Game: Blumenfeld AttackC4511
Scotch Game: Braune VariationC459
Scotch Game: Classical VariationC458
Scotch Game: Classical Variation, Blackburne AttackC4513
Scotch Game: Classical Variation, Intermezzo VariationC4510
Scotch Game: Classical Variation, Millennium VariationC4512
Scotch Game: Fraser VariationC459
Scotch Game: Ghulam-Kassim VariationC4511
Scotch Game: Gottschall VariationC4524
Scotch Game: Horwitz AttackC459
Scotch Game: Horwitz Attack, Blackburne VariationC4517
Scotch Game: Malaniuk VariationC458
Scotch Game: Meitner VariationC4513
Scotch Game: Mieses VariationC4511
Scotch Game: Modern DefenseC4510
Scotch Game: Paulsen AttackC4513
Scotch Game: Paulsen VariationC459
Scotch Game: Paulsen, Gunsberg DefenseC4514
Scotch Game: Potter VariationC459
Scotch Game: Romanishin VariationC4510
Scotch Game: Rosenthal VariationC4518
Scotch Game: Schmidt VariationC458
Scotch Game: Steinitz VariationC458
Scotch Game: Steinitz VariationC459
Scotch Game: Tartakower VariationC4511
Three Knights OpeningC465
Three Knights OpeningC466
Three Knights Opening: Schlechter VariationC468
Three Knights Opening: Steinitz DefenseC466
Three Knights Opening: Steinitz-Rosenthal VariationC469
Three Knights Opening: Winawer DefenseC466
Four Knights GameC476
Four Knights Game: Glek SystemC477
Four Knights Game: Glek SystemC4713
Four Knights Game: Gunsberg VariationC477
Four Knights Game: Gunsberg Variation, Provincial OpeningC479
Four Knights Game: Halloween GambitC477
Four Knights Game: Halloween Gambit, Oldtimer VariationC4716
Four Knights Game: Halloween Gambit, Plasma VariationC4722
Four Knights Game: Italian VariationC477
Four Knights Game: Italian Variation, Noa GambitC479
Four Knights Game: Naroditsky VariationC477
Four Knights Game: Scotch VariationC477
Four Knights Game: Scotch Variation AcceptedC478
Four Knights Game: Scotch Variation Accepted, Main LineC4717
Four Knights Game: Scotch Variation, Belgrade GambitC479
Four Knights Game: Scotch Variation, Belgrade Gambit, Modern DefenseC4712
Four Knights Game: Scotch Variation, Krause GambitC479
Four Knights Game: Scotch Variation, Krause Gambit, Leonhardt DefenseC4710
Four Knights Game: Scotch Variation, Oxford GambitC4710
Four Knights Game: Scotch Variation, Schmid DefenseC4710
Four Knights Game: Spanish VariationC487

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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