ECO C12
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 C12.
- French Defense: McCutcheon Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4
- French Defense: McCutcheon Variation, Advance Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5
- French Defense: McCutcheon Variation, Bernstein Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bh4
- French Defense: McCutcheon Variation, Bogoljubow Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.exd5 Qxd5 6.Bxf6 gxf6 7.Qd2 Qa5
- French Defense: McCutcheon Variation, Chigorin Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6
- French Defense: McCutcheon Variation, Dr. Olland Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bc1
- French Defense: McCutcheon Variation, Duras Variation — 1.e4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 Kf8 9.Bc1
- French Defense: McCutcheon Variation, Exchange Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.exd5
- French Defense: McCutcheon Variation, Grigoriev Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6 hxg5 7.fxg7 Rg8 8.h4 gxh4 9.Qg4
- French Defense: McCutcheon Variation, Janowski Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3
- French Defense: McCutcheon Variation, Lasker Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3
- French Defense: McCutcheon Variation, Tartakower Variation — 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Nfd7