ECO C49
10 named openings and variations are classified as C49. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Four Knights Game: Spanish Variation, Alatortsev VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Qe7 7. Ne2 d5
- Four Knights Game: Spanish Variation, Double SpanishC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4
- Four Knights Game: Spanish Variation, Gunsberg CounterattackC491. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4
- Four Knights Game: Spanish Variation, Janowski VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Re1
- Four Knights Game: Spanish Variation, Nimzowitsch VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. Bxc6
- Four Knights Game: Spanish Variation, Svenonius VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d5
- Four Knights Game: Spanish Variation, Symmetrical VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6
- Four Knights Game: Spanish Variation, Symmetrical Variation, Blake VariationC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bb3 Qd6
- Four Knights Game: Spanish Variation, Symmetrical Variation, Metger UnpinC491. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7
- Four Knights Game: Spanish Variation, Symmetrical Variation, Tarrasch VariationC491. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Be6