ECO C77
8 named openings and variations are classified as C77. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Ruy Lopez: Morphy Defense, Anderssen VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3
- Ruy Lopez: Morphy Defense, Bayreuth VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Bxc6
- Ruy Lopez: Morphy Defense, Duras VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4
- Ruy Lopez: Morphy Defense, Jaffe GambitC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. c3
- Ruy Lopez: Morphy Defense, Mackenzie VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4
- Ruy Lopez: Morphy Defense, Tarrasch VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3
- Ruy Lopez: Morphy Defense, Wormald AttackC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2
- Ruy Lopez: Wormald Attack, Grünfeld VariationC771. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. d4 d6 8. c3 Bg4