1. g1f3  1... g8f6  2. g2g3  2... c7c5  3. f1g2  3... b8c6  4. e1g1  4... e7e5  5. d2d3  5... d7d5  6. e2e4 This might be  Grischuk's rapid weapon, the reversed KID. 6... d5d4  7. a2a4  7... f8d6  8. b1a3  8... h7h6 The opening should not have been a surprise for Wojtaszek. 9. f3h4  9... g7g6 Depriving the knight of the f5 square, a form of  prophylaxis often used by Taimanov. 10. f2f4  10... e5f4  11. g3f4  11... f6g4 A necessary move. 12. h4f3  12... g6g5 This is all about the e5 square. If Black manages to seize  it, he will kill two birds with one stone by shutting down the white  light-squared bishop. 13. e4e5  13... d6e7  14. d1e2  14... g5f4  15. c1f4  15... h8g8  16. a3c4  16... c8e6 