ECO C61

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 C61.

• Ruy Lopez: Bird Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4
• Ruy Lopez: Bird Variation, Paulsen Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Ne7