ECO C70
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.
12 named opening lines are classified under ECO code C70.
- Ruy Lopez: Bird's Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nd4
- Ruy Lopez: Morphy Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6
- Ruy Lopez: Morphy Defense, Alapin's Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bb4
- Ruy Lopez: Morphy Defense, Caro Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5
- Ruy Lopez: Morphy Defense, Classical Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5
- Ruy Lopez: Morphy Defense, Cozio Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7
- Ruy Lopez: Morphy Defense, Fianchetto Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 g6
- Ruy Lopez: Morphy Defense, Graz Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Bc5
- Ruy Lopez: Morphy Defense, Norwegian Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5
- Ruy Lopez: Morphy Defense, Norwegian Variation, Nightingale Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.Bxf7+
- Ruy Lopez: Morphy Defense, Schliemann Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5
- Ruy Lopez: Morphy Defense, Schliemann Defense Deferred, Jaenisch Gambit Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5 5.exf5