ECO C76
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.
1 named opening lines are classified under ECO code C76.
- Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Fianchetto Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.c3 a6 5.Ba4 d6 6.d4 Bd7