Petrov's Defense: Other Continuations
1. e4 e5 2. Nf3 Nf6
Main Transpositions
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 Nc6 to 2. .. Nc6 3. Bc4 Nf6 4. Nc3 Bb4
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 Nc6 to 2. .. Nc6 3. Nc3 Nf6 4. d3 Bb4
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Bc4 Nc6 to 2. .. Nc6 3. d4 exd4 4. Bc4 Nf6
1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nc3 to 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nf3
Most Popular
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 (811/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 (536/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 (3363/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 (517/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 (820/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 (911/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 (994/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 (1210/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 (1554/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 (587/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 (11020/M). More: dbcn ccoe c365
TCEC Games
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 h6 (104cp, 1/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O 5. Be2 Re8 6. Nd3 Bxc3 7. dxc3 Nxe4 8. O-O d6 (20cp, 21/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O 5. Be2 Re8 6. Nd3 Bxc3 (19cp, 83/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O 5. Nd3 Bxc3 6. dxc3 Nxe4 7. Be2 d5 8. O-O c6 (51cp, 7/M, TCEC +0=4-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 d6 5. Nd3 Bxc3 6. dxc3 (-33cp, 10/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 Bg4 5. h3 Bh5 (75cp, 12/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. O-O Qh4 8. c4 O-O-O 9. c5 g5 10. Nc3 Bg7 (2cp, 21/M, TCEC +1=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. Nd2 Nxd2 8. Bxd2 Bd6 9. O-O O-O (41cp, 0/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. Nd2 (-1cp, 5/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5 Nc5 8. Be2 c6 (1cp, 2/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5 Nc5 8. Nc3 c6 (0cp, 7/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Qe2 Qe7 7. Bxe4 dxe4 8. Bf4 Nxe5 (15cp, 1/M, TCEC +1=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxe5 7. dxe5 Nxc3 8. bxc3 Be7 9. Qh5 Be6 10. Rb1 Qd7 (27cp, 2/M, TCEC +0=0-1). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 (1cp, 517/M, TCEC +2=3-1). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Be7 6. O-O Nc5 7. Be2 O-O 8. Be3 Nc6 9. Nc3 Be6 10. Nb5 Nd7 (10cp, 0/M, TCEC +1=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Be7 6. O-O Nc5 7. Nc3 Nc6 (108cp, 1/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Be7 6. O-O Nc5 (1cp, 28/M, TCEC +1=0-1). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d6 5. Qd5 (-58cp, 66/M, TCEC +2=4-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d6 (58cp, 130/M, TCEC +3=4-1). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 5. Nbd2 Nc5 6. a3 a5 (5cp, 0/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 Nc6 (108cp, 23/M, TCEC +2=1-1). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 Bc5 5. Qd5 Bxf2+ 6. Ke2 f5 7. Nc3 c6 8. Nxe4 cxd5 9. Nd6+ Kf8 10. Kxf2 (15cp, 0/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 (2cp, 1210/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 (8cp, 224/M, TCEC +0=6-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ng8 5. Qxd4 Nc6 (114cp, 1/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Bc4 Nxe4 5. Qxd4 Nf6 6. Bg5 Be7 7. Nc3 c6 8. O-O-O d5 (1cp, 11/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 (8cp, 323/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 d5 5. Nbd2 Bc5 6. O-O O-O 7. c3 Be7 8. b4 a6 (26cp, 4/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 dxe4 6. dxe4 Bc5 7. Bg2 O-O 8. O-O (80cp, 16/M, TCEC +0=6-2). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 dxe4 6. dxe4 (54cp, 18/M, TCEC +1=5-2). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 Bc5 6. Bg2 (79cp, 20/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 (54cp, 52/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. exd5 Nxd5 6. Bg2 Bc5 (1cp, 8/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Bc5 (109cp, 11/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 (3cp, 11020/M, TCEC +32=39-15). Games. More: dbcn ccoe c365
Biased Popular Lines
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 Qe7 (73cp, -55cp; 29/M, 11%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 Be7 5. d3 Bg4 6. h3 Bh5 (79cp, -58cp; 9/M, 125%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 Bg4 5. h3 Bh5 (79cp, -48cp; 12/M, 68%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bc5 4. Nxe5 d6 (153cp, -32cp; 7/M, 33%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bc5 (121cp, -120cp; 71/M, 2%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 d5 (81cp, -80cp; 21/M, 0%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Qe7 (98cp, -97cp; 12/M, 0%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Nc3 Bd6 (97cp, -96cp; 10/M, 0%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d6 5. Qd5 Nc5 6. Bg5 Qd7 7. exd6 Bxd6 8. Nc3 O-O (76cp, -32cp; 9/M, 51%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 Nc6 (121cp, -121cp; 23/M, 16%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 Qe7 (159cp, -158cp; 10/M, 13%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Nd5 (130cp, -120cp; 27/M, 9%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Qe7 (130cp, -120cp; 17/M, 6%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Qe2 (98cp, -80cp; 24/M, 11%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. O-O (79cp, -61cp; 17/M, 8%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Bc5 (165cp, -183cp; 86/M, 14%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Be7 (101cp, -119cp; 9/M, 1%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 h6 (239cp, -257cp; 7/M, 1%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 dxe4 6. dxe4 Bc5 7. Bg2 (67cp, -22cp; 19/M, 189%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Bg5 h6 5. Bh4 (73cp, -55cp; 7/M, 63%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. b3 (116cp, -116cp; 8/M, 1%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Bc5 (110cp, -110cp; 11/M, 2%). More: dbcn ccoe c365
Lines with Disagreement to Human Master Play
1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 Be7 5. d3 Bg4 6. h3 Bh5 (79cp, -58cp; 9/M, 125%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Nc6 6. O-O Bg4 7. Nc3 Nxc3 8. bxc3 Be7 (74cp, -65cp; 6/M, 76%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d6 5. Qd5 Nc5 6. Bg5 Be7 7. exd6 Qxd6 8. Nc3 c6 (108cp, -63cp; 5/M, 22%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Bc4 d5 5. exd5 Nxd5 (75cp, -73cp; 5/M, 26%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nxe5 d5 5. Bb3 (170cp, -148cp; 5/M, 29%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nxe5 d5 5. Qf3 (105cp, -83cp; 5/M, 24%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Bg5 h6 5. Bh4 (73cp, -55cp; 7/M, 63%). More: dbcn ccoe c365
Latest dbcn data: 2025-12-19