ECO C12
12 named openings and variations are classified as C12. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- French Defense: McCutcheon VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4
- French Defense: McCutcheon Variation, Advance VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5
- French Defense: McCutcheon Variation, Bernstein VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bh4
- French Defense: McCutcheon Variation, Bogoljubow VariationC121. 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 VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. exf6
- French Defense: McCutcheon Variation, Dr. Olland VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bc1
- French Defense: McCutcheon Variation, Duras VariationC121. 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 VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. exd5
- French Defense: McCutcheon Variation, Grigoriev VariationC121. 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 VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Be3
- French Defense: McCutcheon Variation, Lasker VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3
- French Defense: McCutcheon Variation, Tartakower VariationC121. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Nfd7