C21 — Center Game Accepted
Open Games & French (C00–C99)
1. e4 e5 2. d4 exd4
Full page: Center Game Accepted →ECO C21 covers Center Game Accepted and related lines (Center Game Accepted, Center Game, Center Game: Halasz-McDonnell Gambit, Center Game: Kieseritzky Variation). Main line 1. e4 e5 2. d4 exd4 with variations, statistics, and the best responses.
19 lines under C21
Center Game Accepted
1. e4 e5 2. d4 exd4
Center Game
1. e4 e5 2. d4 exd4 3. Qxd4
Center Game: Halasz-McDonnell Gambit
1. e4 e5 2. d4 exd4 3. f4
Center Game: Kieseritzky Variation
1. e4 e5 2. d4 exd4 3. Nf3
Center Game: Ross Gambit
1. e4 e5 2. d4 exd4 3. Bd3
Center Game: von der Lasa Gambit
1. e4 e5 2. d4 exd4 3. Bc4
Danish Gambit
1. e4 e5 2. d4 exd4 3. c3
Center Game: Kieseritzky Variation
1. e4 e5 2. d4 exd4 3. Nf3 c5
Danish Gambit Accepted
1. e4 e5 2. d4 exd4 3. c3 dxc3
Danish Gambit Accepted: Svenonius Defense
1. e4 e5 2. d4 exd4 3. c3 Ne7
Danish Gambit Declined: Sörensen Defense
1. e4 e5 2. d4 exd4 3. c3 d5
Center Game: Kieseritzky Variation
1. e4 e5 2. d4 exd4 3. Nf3 c5 4. Bc4
Center Game: Lanc-Arnold Gambit
1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. c3
Center Game: Halasz-McDonnell Gambit, Crocodile Variation
1. e4 e5 2. d4 exd4 3. f4 Bc5 4. Nf3 Nc6 5. c3
Center Game: Lanc-Arnold Gambit, Schippler Gambit
1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. c3 dxc3 5. Bc4
Danish Gambit Accepted: Chigorin Defense
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 Qe7
Danish Gambit Accepted: Classical Defense
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 Nf6
Danish Gambit Accepted: Copenhagen Defense
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 Bb4+
Danish Gambit Accepted: Schlechter Defense
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 d5