ECO C68

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.

6 named opening lines are classified under ECO code C68.

• Ruy Lopez: Exchange Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6
• Ruy Lopez: Exchange Variation, Alekhine Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd6
• Ruy Lopez: Exchange Variation, Keres Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3
• Ruy Lopez: Exchange Variation, Lutikov Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6
• Ruy Lopez: Exchange Variation, Romanovsky Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 f6 6.d3
• Ruy Lopez: Exchange, Alekhine Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd7