ECO C71

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.

2 named opening lines are classified under ECO code C71.

• Ruy Lopez: Morphy Defense, Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6
• Ruy Lopez: Noah's Ark Trap — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 d6 6.d4 Nxd4 7.Nxd4 exd4 8.Qxd4 c5