ECO C41

ECO C00–C99 — Open Games and the French Defense: 1.e4 e6 and 1.e4 e5, from the Italian and Ruy Lopez to the King's Gambit.

38 named opening lines are classified under ECO code C41.

• Philidor Defense — 1.e4 e5 2.Nf3 d6
• Philidor Defense: Albin-Blackburne Gambit — 1.e4 e5 2.Nf3 d6 3.d4 Bg4 4.dxe5 Nd7
• Philidor Defense: 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
• Philidor Defense: Bird Gambit — 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.c3
• Philidor Defense: Boden Variation — 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4 Bd7
• Philidor Defense: Exchange Variation — 1.e4 e5 2.Nf3 d6 3.d4 exd4
• Philidor Defense: Hanham Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7
• Philidor Defense: Hanham Variation, Delmar Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.c3
• Philidor Defense: Hanham Variation, Krause Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O
• Philidor Defense: Hanham Variation, Schlechter Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Nc3
• Philidor Defense: Hanham Variation, Sharp Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 Nb6
• Philidor Defense: Hanham Variation, Steiner Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O Be7 6.dxe5
• Philidor Defense: Hanham, Kmoch Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5
• Philidor Defense: Larsen Variation — 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 g6
• Philidor Defense: Lion Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7
• Philidor Defense: Lion Variation, Bishop Sacrifice — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Bxf7+
• Philidor Defense: Lion Variation, Delayed Bishop Sacrifice — 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.Nf3 e5 5.Bc4 Be7 6.dxe5 dxe5 7.Bxf7+
• Philidor Defense: Lion Variation, Forcing Line — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Ng5 O-O 7.Bxf7+ Rxf7 8.Ne6
• Philidor Defense: Lion Variation, Lion's Claw, with Bc4 and h6 — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O h6
• Philidor Defense: Lion Variation, Lion's Claw, with Be2 and c6 — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Be2 Be7 6.O-O c6
• Philidor Defense: Lion Variation, Shirov Gambit — 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Nc3 Ngf6 5.g4
• Philidor Defense: Lion Variation, Sozin Variation — 1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Qe2 c6 8.a4 exd4
• Philidor Defense: Lopez Countergambit — 1.e4 e5 2.Nf3 d6 3.Bc4 f5
• Philidor Defense: Lopez Countergambit, Jaenisch Variation — 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Bc4 exd4 5.Ng5 Nh6 6.Nxh7
• Philidor Defense: Morphy Gambit — 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Bc4
• Philidor Defense: Nimzowitsch Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6
• Philidor Defense: Nimzowitsch Variation, Klein Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Bc4
• Philidor Defense: Nimzowitsch Variation, Rellstab Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Qd5
• Philidor Defense: Nimzowitsch Variation, Sokolsky Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Nbd2
• Philidor Defense: Nimzowitsch, Larobok Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Ng5 O-O 7.Bxf7+
• Philidor Defense: Nimzowitsch, Locock Variation — 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Ng5
• Philidor Defense: Paulsen Attack — 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 d5 5.exd5
• Philidor Defense: Philidor Countergambit — 1.e4 e5 2.Nf3 d6 3.d4 f5
• Philidor Defense: Philidor Countergambit, Berger Variation — 1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6 Bc5 7.Nc3
• Philidor Defense: Philidor Countergambit, Zukertort Variation — 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3
• Philidor Defense: Philidor Countergambit, del Rio Attack — 1.e4 e5 2.Nf3 d6 3.d4 f5 4.dxe5 fxe4 5.Ng5 d5 6.e6
• Philidor Defense: Philidor Gambit — 1.e4 e5 2.Nf3 d6 3.d4 Bd7
• Philidor Defense: Steinitz Variation — 1.e4 e5 2.Nf3 d6 3.Bc4 Be7 4.c3