(T) QGD: Three Knights Variation, 4…Be7, Harrwitz Attack (5.Bf4) and Other Continuations
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7
Main Transpositions
Most Popular
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 (559/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 (606/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 (681/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 (553/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 (1846/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O (1929/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 (2369/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O (781/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 (964/M). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 (7452/M). More: dbcn ccoe c365
TCEC Games
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. Rd1 Re8 (6cp, 12/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O Be7 11. g4 dxc4 12. Bxc4 e5 (0cp, 14/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O Be7 (0cp, 51/M, TCEC +1=2-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O Rd8 11. Nb5 (-84cp, 0/M, TCEC +2=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Re8 (7cp, 12/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 (4cp, 190/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. a3 Nc6 9. Be2 dxc4 10. Bxc4 Qxd1+ 11. Rxd1 b6 12. O-O Bb7 (4cp, 0/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 exd5 9. Be2 Nc6 10. O-O Be6 (14cp, 32/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 exd5 9. Bd3 Nc6 10. O-O Bg4 11. h3 Bxf3 12. Qxf3 d4 13. Ne4 Be7 14. Rad1 Qa5 (111cp, 0/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Be2 Nc6 (12cp, 15/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 (2cp, 681/M, TCEC +1=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Nh5 8. Bd3 c6 (4cp, 12/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Ne4 (15cp, 24/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 b6 (103cp, 1/M, TCEC +3=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. Qc2 a6 8. cxd5 exd5 (17cp, 9/M, TCEC +0=0-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. Be2 dxc4 8. Bxc4 Nb6 (15cp, 4/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 (3cp, 553/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6 7. cxd5 exd5 8. a3 c5 (18cp, 8/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Qc2 Nbd7 8. h3 a6 (16cp, 13/M, TCEC +2=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Qc2 Nbd7 8. h3 h6 (14cp, 4/M, TCEC +0=4-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Qc2 Nbd7 8. Bd3 Re8 (81cp, 5/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O Re8 (83cp, 9/M, TCEC +2=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O b6 (83cp, 9/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. h3 dxc4 (0cp, 18/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nc6 7. a3 a6 (108cp, 5/M, TCEC +1=0-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 (-1cp, 1846/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 a6 6. e3 Nbd7 (98cp, 16/M, TCEC +3=0-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. Bd3 dxc4 7. Bxc4 b6 8. O-O Bb7 (2cp, 38/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. Bd3 c5 7. O-O Nc6 8. dxc5 Bxc5 (1cp, 15/M, TCEC +0=0-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. a3 Nbd7 7. c5 Nb8 8. b4 Ne4 (78cp, 0/M, TCEC +2=6-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. cxd5 exd5 7. Bd3 b6 8. O-O Nbd7 (4cp, 17/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Qc2 c5 6. dxc5 d4 7. Nb5 e5 8. Nxe5 a6 (-10cp, 2/M, TCEC +1=0-1). Games. More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 (2cp, 7452/M, TCEC +19=6-19). Games. More: dbcn ccoe c365
Biased Popular Lines
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. Rd1 Be7 11. Be2 dxc4 12. Bxc4 e5 (106cp, -91cp; 13/M, 55%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 Nxd5 9. Nxd5 exd5 10. a3 Nc6 11. Bd3 Bb6 12. O-O d4 13. e4 Bg4 14. h3 Qf6 (80cp, -78cp; 8/M, 47%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. a3 a6 (76cp, -76cp; 7/M, 10%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O Re8 (79cp, -63cp; 9/M, 21%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O b6 (76cp, -60cp; 9/M, 20%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 a6 6. e3 Nbd7 (76cp, -65cp; 16/M, 24%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 a6 6. e3 Nc6 (78cp, -67cp; 8/M, 13%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. Bd3 c6 7. O-O dxc4 8. Bxc4 b5 9. Bd3 a6 (163cp, -147cp; 11/M, 35%). More: dbcn ccoe c365
Lines with Disagreement to Human Master Play
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. Rd1 Be7 11. Be2 dxc4 12. Bxc4 e5 (106cp, -91cp; 13/M, 55%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 Nxd5 9. Nxd5 exd5 10. a3 Nc6 11. Bd3 Bb6 12. O-O d4 13. e4 Bg4 14. h3 Qf6 (80cp, -78cp; 8/M, 47%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Qc2 Nbd7 8. a3 Re8 (80cp, -70cp; 5/M, 33%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O Re8 9. h3 Nf8 (151cp, -110cp; 5/M, 66%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O Re8 (79cp, -63cp; 9/M, 21%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. O-O b6 (76cp, -60cp; 9/M, 20%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 a6 6. e3 Nbd7 (76cp, -65cp; 16/M, 24%). More: dbcn ccoe c365
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. e3 O-O 6. Bd3 c6 7. O-O dxc4 8. Bxc4 b5 9. Bd3 a6 (163cp, -147cp; 11/M, 35%). More: dbcn ccoe c365
Latest dbcn data: 2025-12-19