1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. d2d4  3... c5d4  4. f3d4  4... e7e5 A risky variation that shows that Nakamura was willing to play for the win with Black. This choice certainly surprised his opponent, who was probably expecting the Berlin. 5. d4b5 