C69Black3 book lines continue
Exchange Variation, Alapin Gambit
Ruy Lopez1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3 h5
Also known as Spanish: Exchange, Alapin Gambit, Spanish Game, Exchange Variation, Alapin Gambit, Ruy Lopez Exchange.