ECO C43

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.

11 named opening lines are classified under ECO code C43.

• Bishop's Opening: Urusov Gambit — 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3
• Bishop's Opening: Urusov Gambit, Keidansky Gambit — 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4
• Petrov's Defense: Modern Attack — 1.e4 e5 2.Nf3 Nf6 3.d4
• Petrov's Defense: Modern Attack, Bardeleben Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2 Nc5 6.Nxd4 Nc6
• Petrov's Defense: Modern Attack, Center Attack — 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4
• Petrov's Defense: Modern Attack, Center Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3
• Petrov's Defense: Modern Attack, Murrey Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 Nc6
• Petrov's Defense: Modern Attack, Steinitz Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2
• Petrov's Defense: Modern Attack, Symmetrical Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 d5
• Petrov's Defense: Modern Attack, Tal Gambit — 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Bb5
• Petrov's Defense: Modern Attack, Trifunovic Variation — 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.O-O O-O 7.c4 Bxe5