comment: A rare plan—I found only two games by amateur players in my database. A transposition to a professional game will occur later on. In the other games, Grischuk played the more natural 5.Nf3.
context: 1. d2d4  1... g8f6  2. c1f4  2... d7d5  3. e2e3  3... c8f5  4. f1d3 This opening was played several times during today's matches. 4... f5g6 