ECO C42: Petrov's Defense
ECO C42 is part of volume C, Open Games.
The Lichess chess-openings dataset files 38 named lines under it.
The shortest is Petrov's Defense:
1. e4 e5 2. Nf3 Nf6.
That position has come up in 37,386,625 Lichess games between players rated 1600 to 2500: White won 49.5%, 4.8% were drawn and Black won 45.7%.
| Opening | Moves | Games | Length |
|---|---|---|---|
| Petrov's Defense | 1. e4 e5 2. Nf3 Nf6 |
37.4M | 2 moves |
| Petrov's Defense | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 |
12.7M | 3 moves |
| Petrov's Defense: Italian Variation | 1. e4 e5 2. Nf3 Nf6 3. Bc4 |
10.1M | 3 moves |
| Petrov's Defense: Three Knights Game | 1. e4 e5 2. Nf3 Nf6 3. Nc3 |
15.9M | 3 moves |
| Petrov's Defense | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 |
5M | 3 moves |
| Petrov's Defense: Damiano Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 |
1.1M | 3 moves |
| Petrov's Defense: Stafford Gambit | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 |
4.6M | 3 moves |
| Petrov's Defense | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 |
4.4M | 4 moves |
| Petrov's Defense: Cochrane Gambit | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 |
379K | 4 moves |
| Petrov's Defense: Karklins-Martinovsky Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nd3 |
97K | 4 moves |
| Petrov's Defense: Moody Gambit | 1. e4 e5 2. Nf3 Nf6 3. Qe2 Nc6 4. d4 |
2,283 | 4 moves |
| Petrov's Defense: Paulsen Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nc4 |
194K | 4 moves |
| Petrov's Defense | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 |
4.2M | 4 moves |
| Petrov's Defense: Damiano Variation, Kholmov Gambit | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 Qe7 |
385K | 4 moves |
| Petrov's Defense: Stafford Gambit | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 |
3.8M | 4 moves |
| Petrov's Defense: Classical Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 |
1.4M | 5 moves |
| Petrov's Defense: Cochrane Gambit, Bishop Check Line | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. Bc4+ |
154K | 5 moves |
| Petrov's Defense: Cochrane Gambit, Center Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. d4 |
151K | 5 moves |
| Petrov's Defense: Cozio Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 |
948K | 5 moves |
| Petrov's Defense: French Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d3 |
458K | 5 moves |
| Petrov's Defense: Kaufmann Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. c4 |
42K | 5 moves |
| Petrov's Defense: Millennium Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bd3 |
102K | 5 moves |
| Petrov's Defense: Nimzowitsch Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 |
961K | 5 moves |
| Petrov's Defense: Classical Attack, Closed Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Nf6 |
56K | 5 moves |
| Petrov's Defense: Classical Attack, Marshall Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 |
365K | 6 moves |
| Petrov's Defense: Classical Attack, Mason-Showalter Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 |
140K | 6 moves |
| Petrov's Defense: Classical Attack, Mason Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O |
103K | 7 moves |
| Petrov's Defense: Classical Attack, Chigorin Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 |
41K | 8 moves |
| Petrov's Defense: Classical Attack, Jaenisch Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 |
49K | 8 moves |
| Petrov's Defense: Classical Attack, Staunton Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 |
143K | 8 moves |
| Petrov's Defense: Classical Attack, Tarrasch Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 Bg4 |
1,947 | 8 moves |
| Petrov's Defense: Classical Attack, Chigorin Variation, Browne Attack | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nb4 9. cxd5 |
9,901 | 9 moves |
| Petrov's Defense: Classical Attack, Chigorin Variation, Main Line | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nb4 9. Be2 |
14K | 9 moves |
| Petrov's Defense: Classical Attack, Marshall Variation, Chinese Gambit | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Re1 Bg4 |
2,427 | 9 moves |
| Petrov's Defense: Classical Attack, Berger Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. Nbd2 |
3,192 | 10 moves |
| Petrov's Defense: Classical Attack, Krause Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4 |
95 | 10 moves |
| Petrov's Defense: Classical Attack, Marshall Trap | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 Bg4 9. cxd5 f5 10. Re1 Bxh2+ |
892 | 10 moves |
| Petrov's Defense: Classical Attack, Maróczy Variation | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. c4 Bh4 |
3 | 10 moves |