| C42 | Petrov's Defence |
| 1.e4 e5 2.Nf3 Nf6 |
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| C42 | Petrov's Defence |
| French Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3 |
| |
| C42 | Petrov's Defence |
| Kaufmann Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.c4 |
| |
| C42 | Petrov's Defence |
| Nimzovich Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 |
| |
| C42 | Petrov's Defence |
| Cozio (Lasker) Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 |
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| C42 | Petrov's Defence |
| Classical Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 |
| |
| C42 | Petrov's Defence |
| 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 |
| |
| C42 | Petrov's Defence |
| 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 |
| |
| C42 | Petrov's Defence |
| Classical Attack, Krause 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 |
| |
| C42 | Petrov's Defence |
| Classical Attack, Maroczy 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 |
| |
| C42 | Petrov's Defence |
| Classical Attack, Jaenisch Variation |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4 |
| |
| C42 | Petrov's Defence |
| 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 |
| |
| C42 | Petrov's Defence |
| Classical Attack, Marshall Variation |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 |
| |
| C42 | Petrov's Defence |
| 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 |
| |
| C42 | Petrov's Defence |
| 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 |
| |
| C42 | Petrov's Defence |
| Classical Attack, close Variation |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 Nf6 |
| |
| C42 | Petrov's Defence |
| Cochrane Gambit |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nxf7 |
| |
| C42 | Petrov's Defence |
| Paulsen Attack |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4 |
| |
| C42 | Petrov's Defence |
| Damiano Variation |
| 1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 |
| |
| C42 | Petrov's Defence |
| Three Knights Game |
| 1.e4 e5 2.Nf3 Nf6 3.Nc3 |
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| C42 | Petrov's Defence |
| Italian Variation |
| 1.e4 e5 2.Nf3 Nf6 3.Bc4 |
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