ECO C66: Ruy Lopez
ECO C66 is part of volume C — Open Games.
The Lichess chess-openings dataset files 7 named lines under it.
The shortest is Ruy Lopez: Berlin Defense, Improved Steinitz Defense:
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6.
That position has come up in 1,933,610 Lichess games between players rated 1600 to 2500: White won 53.6%, 5.1% were drawn and Black won 41.3%.
| Opening | Moves | Plies |
|---|---|---|
| Ruy Lopez: Berlin Defense, Improved Steinitz Defense | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 |
8 |
| Ruy Lopez: Closed Berlin Defense, Chigorin Variation | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Nd7 |
10 |
| Ruy Lopez: Berlin Defense, Closed Wolf Variation | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 exd4 |
12 |
| Ruy Lopez: Berlin Defense, Hedgehog Variation | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 |
12 |
| Ruy Lopez: Berlin Defense, Closed Bernstein Variation | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. Bg5 |
13 |
| Ruy Lopez: Berlin Defense, Closed Showalter Variation | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. Bxc6 |
13 |
| Ruy Lopez: Berlin Defense, Tarrasch Trap | 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 Nf6 6. O-O Be7 7. Re1 O-O |
14 |