context: 1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. b1c3  3... d7d5  4. d1b3 Arjun and Vachier-Lagrave are two creative and aggressive players. A no-holds-barred battle was expected, and they didn't disappoint. They have different styles of opening play: while Arjun can try anything, Vachier-Lagrave sticks to his favorite openings. The theoretical battle starts early—the move 4.Qb3 is not very popular. 4... d5c4 