C74Black9 book lines continue
Morphy Defense, Modern Steinitz Defense, Siesta Variation
Ruy Lopez1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 f5
Also known as Spanish: Modern Steinitz, Siesta Variation, Spanish Game, Morphy Defense, Siesta Variation, Ruy Lopez.