ECO C69
5 named openings and variations are classified as C69. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Ruy Lopez: Exchange Variation, Alapin GambitC691. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3 h5
- Ruy Lopez: Exchange Variation, Bronstein VariationC691. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Qd6
- Ruy Lopez: Exchange Variation, Gligoric VariationC691. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6
- Ruy Lopez: Exchange Variation, King's Bishop VariationC691. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bd6
- Ruy Lopez: Exchange Variation, Normal VariationC691. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O