1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4 The open Ruy Lopez is one of the best defenses for Black, but it's not the most popular among the elite, so it ends up being a small and pleasant surprise for me to see it employed in the first round.