ECO C62
4 named openings and variations are classified as C62. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Ruy Lopez: Steinitz DefenseC621. e4 e5 2. Nf3 Nc6 3. Bb5 d6
- Ruy Lopez: Steinitz Defense, Center GambitC621. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. O-O
- Ruy Lopez: Steinitz Defense, Nimzowitsch AttackC621. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 Nf6 6. Bxc6
- Ruy Lopez: Steinitz Defense, Semi-Duras VariationC621. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. c4