1. c4 c5

English Opening: Symmetrical Variation, Other Continuations

1. c4 c5

Main Transpositions

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 d5 6. cxd5 Nxd5 to 1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 e6
1. c4 c5 2. Nc3 g6 3. Nf3 to 1. Nf3 c5 2. c4 g6 3. Nc3
1. c4 c5 2. Nc3 e6 3. Nf3 to 1. Nf3 c5 2. c4 e6 3. Nc3
1. c4 c5 2. Nc3 b6 3. Nf3 to 1. Nf3 c5 2. c4 b6 3. Nc3

Most Popular

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 (1503/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 g6 (1051/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 (1274/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. e4 (555/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 (1910/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 g6 (687/M). More: dbcn ccoe c365
1. c4 c5 2. Nc3 (3400/M). More: dbcn ccoe c365
1. c4 c5 2. g3 g6 3. Bg2 Nc6 (573/M). More: dbcn ccoe c365
1. c4 c5 2. g3 g6 3. Bg2 (724/M). More: dbcn ccoe c365
1. c4 c5 2. g3 g6 3. Nc3 (506/M). More: dbcn ccoe c365
1. c4 c5 2. g3 g6 (719/M). More: dbcn ccoe c365
1. c4 c5 2. g3 Nc6 3. Bg2 (687/M). More: dbcn ccoe c365
1. c4 c5 2. g3 Nc6 (626/M). More: dbcn ccoe c365
1. c4 c5 2. g3 (1699/M). More: dbcn ccoe c365
1. c4 c5 (7800/M). More: dbcn ccoe c365

TCEC Games

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Nf6 (2cp, 303/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. e4 Bg7 5. d3 d6 6. Nge2 e5 (1cp, 4/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 d5 6. cxd5 (-1cp, 196/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 (38cp, 130/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Qa5 (51cp, 4/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 a6 6. O-O Qc7 (50cp, 10/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. e4 Be7 (14cp, 57/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. Nf3 e5 6. O-O Be7 7. d3 O-O 8. a3 Bg4 (37cp, 3/M, TCEC +0=4-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. Nf3 e5 6. O-O Be7 7. d3 O-O 8. a3 a6 (20cp, 2/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. Nf3 e5 6. O-O Be7 7. d3 h6 8. Nd2 O-O (35cp, 0/M, TCEC +0=3-1). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e5 5. e3 d6 6. Nge2 Be6 (35cp, 5/M, TCEC +1=0-1). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 b6 4. Bg2 Bb7 (17cp, 32/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. e4 g6 4. f4 Bg7 5. Nf3 d6 6. d3 Nf6 7. Be2 O-O 8. O-O a6 (-4cp, 9/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 (1cp, 1910/M, TCEC +6=10-4). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 g6 (1cp, 687/M, TCEC +2=4-2). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 e6 (1cp, 181/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. c4 c5 2. Nc3 b6 (13cp, 157/M, TCEC +3=2-1). Games. More: dbcn ccoe c365
1. c4 c5 2. g3 g6 (1cp, 719/M, TCEC +6=4-5). Games. More: dbcn ccoe c365
1. c4 c5 2. g3 Nc6 (1cp, 626/M, TCEC +5=9-6). Games. More: dbcn ccoe c365
1. c4 c5 2. d4 cxd4 (-1cp, 26/M, TCEC +1=1-1). Games. More: dbcn ccoe c365
1. c4 c5 2. g4 (26cp, 1/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. c4 c5 (1cp, 7800/M, TCEC +15=25-19). Games. More: dbcn ccoe c365

Biased Popular Lines

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 d6 11. Rc1 Ne5 (102cp, -70cp; 15/M, 30%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 d6 11. Rc1 Bd7 (94cp, -62cp; 10/M, 20%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 b6 11. Rc1 Bb7 (141cp, 0cp; 11/M, 86%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 b6 (138cp, -103cp; 16/M, 23%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. Bf4 Nxd4 (115cp, -82cp; 8/M, 51%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 (141cp, -5cp; 11/M, 90%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Nxd4 (136cp, -113cp; 8/M, 5%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 d6 (91cp, -89cp; 11/M, 9%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. e3 g6 (76cp, -76cp; 11/M, 20%). More: dbcn ccoe c365

Lines with Disagreement to Human Master Play

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 d6 11. Rc1 Ne5 (102cp, -70cp; 15/M, 30%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 d6 11. Rc1 Bd7 (94cp, -62cp; 10/M, 20%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 b6 (138cp, -103cp; 16/M, 23%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nf3 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 a6 9. Bf4 Nxd4 (115cp, -82cp; 8/M, 51%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. e4 d5 6. d3 (57cp, -58cp; 8/M, 32%). More: dbcn ccoe c365
1. c4 c5 2. Nc3 Nc6 3. e3 g6 (76cp, -76cp; 11/M, 20%). More: dbcn ccoe c365

Latest dbcn data: 2025-12-19

page revision: 28, last edited: 18 Dec 2025 23:30
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