Ruy López Opening: Bird's Defense
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4
Main Transpositions
Most Popular
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 (548/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 (548/M). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 (651/M). More: dbcn ccoe c365
TCEC Games
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bc5 6. d3 c6 7. Bc4 d6 8. Qh5 Qe7 (18cp, 5/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bc5 6. Bc4 d6 7. d3 Qe7 (81cp, 0/M, TCEC +2=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bc5 (35cp, 188/M, TCEC +1=3-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Bc4 Nf6 7. Re1 d6 8. c3 Ng4 (100cp, 14/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Bc4 Nf6 (50cp, 63/M, TCEC +0=8-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Bc4 g6 (108cp, 1/M, TCEC +2=2-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 (16cp, 136/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Ne7 6. d3 c6 7. Bc4 d5 8. Bb3 dxe4 9. dxe4 Ng6 (95cp, 0/M, TCEC +5=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Ne7 (85cp, 12/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. Bc4 h5 (88cp, 5/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 (16cp, 548/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 (14cp, 651/M, TCEC +2=7-1). Games. More: dbcn ccoe c365
Biased Popular Lines
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Bc4 Nf6 7. Re1 d6 8. c3 Ng4 (100cp, -82cp; 14/M, 59%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Nf6 (105cp, -90cp; 13/M, 3%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Ne7 (76cp, -61cp; 12/M, 3%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O a6 (94cp, -79cp; 11/M, 3%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. d3 Nf6 (105cp, -98cp; 9/M, 12%). More: dbcn ccoe c365
Lines with Disagreement to Human Master Play
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bc5 6. d3 Ne7 7. Qh5 Bb6 (131cp, -67cp; 5/M, 96%). More: dbcn ccoe c365
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O c6 6. Bc4 Nf6 7. Re1 d6 8. c3 Ng4 (100cp, -82cp; 14/M, 59%). More: dbcn ccoe c365
Latest dbcn data: 2025-12-19