A move that is always useful, giving air to the king and supporting the advance of the pawn to g4; after all, pushing the majority is usually the only way for White to fight for an advantage.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. e1g1  4... f6e4  5. d2d4  5... e4d6  6. b5c6  6... d7c6  7. d4e5  7... d6f5  8. d1d8  8... e8d8  9. b1c3 It was already clear before the Candidates Tournament began that opening preparation would be a strong point for two-time champion Nepomniachtchi. He continues to generate many new ideas in the Ruy Lopez, this time deciding to face the infamous Berlin Defense ending. Perhaps the outcome of the position on the board is not that spectacular, but he managed to get a big time advantage and continued to play quickly, creating serious practical problems for Vidit. 9... c8d7 There are many possible plans for Black, but this one is fashionable.