1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4 The Ruy Lopez Open Variation continues to be considered one of the most reliable options for Black, even though it's not as popular among the elite as the Berlin nowadays. 6. d2d4  6... b7b5 