ECO C64
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.
10 named opening lines are classified under ECO code C64.
- Ruy Lopez: Classical Defense, Benelux Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6
- Ruy Lopez: Classical Defense, Boden Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Qe7
- Ruy Lopez: Classical Defense, Zaitsev Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.b4
- Ruy Lopez: Classical Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5
- Ruy Lopez: Classical Variation, Central Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3
- Ruy Lopez: Classical Variation, Charousek Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Bb6
- Ruy Lopez: Classical Variation, Cordel Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 f5
- Ruy Lopez: Classical Variation, Konikowski Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 d5
- Ruy Lopez: Classical Variation, Modern Main Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6 7.Bg5
- Ruy Lopez: Classical Variation, Spanish Wing Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.b4