| C41 | Philidor's Defence |
| 1.e4 e5 2.Nf3 d6 |
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| C41 | Philidor's Defence |
| Steinitz Variation |
| 1.e4 e5 2.Nf3 d6 3.Bc4 Be7 4.c3 |
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| C41 | Philidor's Defence |
| Lopez Counter-Gambit |
| 1.e4 e5 2.Nf3 d6 3.Bc4 f5 |
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| C41 | Philidor's Defence |
| Lopez Counter-Gambit, Jaenisch Variation |
| 1.e4 e5 2.Nf3 d6 3.Bc4 f5 4.d4 exd4 5.Ng5 Nh6 6.Nxh7 |
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| C41 | Philidor's Defence |
| 1.e4 e5 2.Nf3 d6 3.d4 |
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| C41 | Philidor's Defence |
| Philidor Counter-Gambit |
| 1.e4 e5 2.Nf3 d6 3.d4 f5 |
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| C41 | Philidor's Defence |
| Philidor Counter-Gambit, del Rio Attack |
| 1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6 |
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| C41 | Philidor's Defence |
| Philidor Counter-Gambit, Berger Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6 Bc5 7.Nc3 |
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| C41 | Philidor's Defence |
| Philidor Counter-Gambit, Zukertort Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3 |
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| C41 | Philidor's Defence |
| Exchange Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 |
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| C41 | Philidor's Defence |
| Boden Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4 Bd7 |
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| C41 | Philidor's Defence |
| Exchange Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 |
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| C41 | Philidor's Defence |
| Paulsen Attack |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 d5 5.exd5 |
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| C41 | Philidor's Defence |
| Exchange Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 |
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| C41 | Philidor's Defence |
| Berger Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Be2 O-O 7.O-O c5 8.Nf3 Nc6 9.Bg5 Be6 10.Re1 |
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| C41 | Philidor's Defence |
| Larsen Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 g6 |
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| C41 | Philidor's Defence |
| Nimzovich (Jaenisch) Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 |
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| C41 | Philidor's Defence |
| Improved Hanham Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 |
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| C41 | Philidor's Defence |
| Nimzovich, Sozin Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Qe2 c6 8.a4 exd4 |
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| C41 | Philidor's Defence |
| Nimzovich, Larobok Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Ng5 O-O 7.Bxf7 |
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| C41 | Philidor's Defence |
| Nimzovich Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 |
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| C41 | Philidor's Defence |
| Nimzovich, Sokolsky Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Nbd2 |
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| C41 | Philidor's Defence |
| Nimzovich, Rellstab Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Qd5 |
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| C41 | Philidor's Defence |
| Nimzovich, Locock Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Ng5 |
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| C41 | Philidor's Defence |
| Nimzovich, Klein Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Bc4 |
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| C41 | Philidor's Defence |
| Hanham Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 |
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| C41 | Philidor's Defence |
| Hanham, Krause Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O |
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| C41 | Philidor's Defence |
| Hanham, Steiner Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O Be7 6.dxe5 |
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| C41 | Philidor's Defence |
| Hanham, Kmoch Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5 |
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| C41 | Philidor's Defence |
| Hanham, Berger Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5 Nh6 6.f4 Be7 7.O-O O-O 8.c3 d5 |
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| C41 | Philidor's Defence |
| Hanham, Schlechter Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Nc3 |
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| C41 | Philidor's Defence |
| Hanham, Delmar Variation |
| 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.c3 |
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