1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5

Sicilian Defense: Kan, Modern, Polugaevsky Variation

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5

Main Transpositions

Most Popular

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 (617/M). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 (507/M). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 (1139/M). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 (1193/M). More: dbcn ccoe c365

TCEC Games

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. c4 Nf6 (51cp, 63/M, TCEC +1=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. Qg4 g6 (42cp, 44/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. Nc3 Nf6 (13cp, 32/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 9. Nc3 Nc6 (93cp, 1/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 (79cp, 143/M, TCEC +1=5-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 Bf6 8. N1d2 Nc6 (19cp, 1/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Be3 d6 8. N1d2 Nf6 9. f4 Nbd7 (102cp, 3/M, TCEC +3=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Be3 d6 8. N1d2 Nd7 9. f4 b6 (83cp, 1/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 (54cp, 617/M, TCEC +2=7-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 d6 (23cp, 66/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 Bxe3 (15cp, 31/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 Nge7 (19cp, 17/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Nc3 d6 (6cp, 48/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. O-O Nge7 (10cp, 18/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. O-O Nc6 8. c4 d6 (24cp, 9/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qg4 Nf6 8. Qg3 d6 (2cp, 45/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 (14cp, 507/M, TCEC +1=5-0). Games. More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Be3 Qb6 (81cp, 12/M, TCEC +1=1-0). Games. More: dbcn ccoe c365

Biased Popular Lines

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. c4 Nf6 9. Nc3 Nbd7 10. f4 Qc7 (68cp, -35cp; 11/M, 84%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. c4 Nf6 9. Nc3 Qc7 (68cp, -34cp; 22/M, 29%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. c4 Nf6 9. Nc3 Nc6 (84cp, -50cp; 7/M, 9%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. Nc3 Qc7 (76cp, -63cp; 10/M, 27%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. f4 Qc7 (67cp, -35cp; 8/M, 35%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O Qc7 (67cp, -31cp; 26/M, 11%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 9. O-O Qc7 (98cp, -56cp; 10/M, 8%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 (75cp, -29cp; 143/M, 94%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Nc3 d6 (75cp, -52cp; 9/M, 102%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 Bf6 (82cp, -36cp; 28/M, 12%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 Nf6 (66cp, -20cp; 7/M, 3%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Nc3 d6 (74cp, -36cp; 39/M, 73%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 d6 9. Nc3 Bxe3 10. Qxe3 Nf6 11. O-O-O O-O 12. f4 Qc7 (78cp, -62cp; 11/M, 113%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Nc3 Qc7 (175cp, -157cp; 8/M, 11%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Be3 Qb6 7. c3 Nc6 (82cp, -4cp; 8/M, 79%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Be3 Qb6 (78cp, -68cp; 12/M, 62%). More: dbcn ccoe c365

Lines with Disagreement to Human Master Play

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 d6 9. Nc3 Bxe3 10. Qxe3 Nf6 11. O-O-O O-O 12. f4 Qc7 (78cp, -62cp; 11/M, 113%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qg4 Nf6 8. Qg3 d6 9. Nc3 Nc6 10. Bg5 h6 11. Bd2 Ne5 (86cp, -86cp; 5/M, 26%). More: dbcn ccoe c365
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Be3 Qb6 (78cp, -68cp; 12/M, 62%). More: dbcn ccoe c365

Latest dbcn data: 2025-12-19

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