OPENING THEORY

- ECO CODES BASE - OPENINGS -
BASIC ECO CLASSIFICATION

You will find, in the following tableau, a general presentation of Chess Openings, according to the famous ECO (Encyclopedia of Chess Openings) Classification.
By clicking on the appropriate link you access to one of 50 basic menus allowing to enter in our ECB (ECO Codes Base) Classification!

Research by Specific Chess Openings
(Click on the appropriate link to select, among
50 basic menus of the ECB, the right one)

   A0 - Various & Reti Openings
   A1 - English Opening: 1.c4
   A2 - English Opening: 1.c4 e5
   A3 - English Opening: 1.c4 c5
   A4 - Queen's pawn game: 1.d4 (Nf6)
   A5 - Queen's pawn game: 1.d4 Nf6 2.c4
   A6 - Benoni Defense
   A7 - Benoni Defense: classical
   A8 - Duch Defense (Leningrad)
   A9 - Dutch Defense (Ilyin-Genevsky)
   B0 - King's pawn: Alekhine & Pirc
   B1 - Caro-Kann Defense: 1.e4 c6
   B2 - Sicilian Defense: 1.e4 c5
   B3 - Sicilian Defense: 2.Nf3 Nc6
   B4 - Sicilian Defense: Kan & Taimanov
   B5 - Sicilian Defense: 2.Nf3 d6
   B6 - Sicilian Defense: Richter-Rauzer
   B7 - Sicilian Defense: Dragon variation
   B8 - Sicilian: Scheveningen variation
   B9 - Sicilian: Najdorf variation
   C0 - French Defense: 1.e4 e6
   C1 - French Defense: 2.d4 d5 3.Nc3
   C2 - King's pawn game: 1.e4 e5
   C3 - King's Gambit: 1.e4 e5 2.f4
   C4 - King's Knight opening: 1.e4 e5 2.Nf3
   C5 - King's Knight: 2.Nf3 Nc6 3.Bc4
   C6 - Ruy Lopez: 2.Nf3 Nc6 3.Bb5
   C7 - Ruy Lopez: 3.Bb5 a6 3.Ba4
   C8 - Ruy Lopez: Open & Closed
   C9 - Ruy Lopez: Breyer & Chigorin
   D0 - Queen' pawn game: 1.d4 d5
   D1 - QGD: Slav Defense: 2.c4 c6
   D2 - Queen's Gambit Accepted: 2.c4 dxc4
   D3 - Queen's Gambit Declined: 2.c4 e6
   D4 - QGD: Semi-Tarrasch & Semi-Slav
   D5 - QGD: 2c4 e6 3.Nc3 Nf6 4.Bg5
   D6 - QGD: Orthodox Defense (Classical)
   D7 - QGD: Neo-Gruenfeld: 2...g6 (3.g3 d5)
   D8 - QGD: Gruenfeld Defense: 3.Nc3 d5
   D9 - QGD: Gruenfeld Three Knights variat.
   E0 - Queen's pawn game: 1.d4 Nf6 2.c4 e6
   E1 - Bogo-Indian & Queen's Indian
   E2 - Nimzo-Indian Defense: 3.Nc3 Bb4
   E3 - Nimzo-Indian Defense: Classical
   E4 - Nimzo-Indian Defense: 4.e3
   E5 - Nimzo-Indian Defense: Main Line
   E6 - King's Indian Defense: 2.c4 g6
   E7 - King's Indian Defense: 3.Nc3 Bg7 4.e4
   E8 - King's Indian Defense: Saemisch
   E9 - King's Indian Defense: 5.Nf3

Chess-Theory Forums - ECO Codes Base
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