1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8e7 This is the Cozio Variation of the Ruy Lopez, and it has appeared in other \"Games of the Day.\" Nakamura has used it a few times with Black but not often. He played a game with White against Caruana in 2024 that may have sparked his idea to play it with the other color. 4. b1c3 White has three other major moves. 4... e7g6  5. d2d4  5... e5d4  6. f3d4  6... c6d4  7. d1d4  7... c7c6 