context: 1. e2e4  1... c7c5  2. g1f3  2... e7e6  3. d2d4  3... c5d4  4. f3d4  4... b8c6  5. b1c3  5... d8c7  6. c1e3  6... a7a6  7. a2a3 A cunning way of meeting the Taimanov variation. It's much more dangerous than it looks and has been played many times by strong GMs. 7... b7b5 This is probably the most reliable move. 8. d4c6  8... c7c6  9. d1d4 A curious move and not the most popular. 9... c6d6 A rare move, offering a queen exchange. Black faces some problems on the queenside, so this is probably not the most accurate. 10. e1c1  10... d6d4  11. e3d4  11... c8b7  12. f2f3  12... g8e7 A typical maneuver: the knight is heading to c6. It seems that Black is close to equalizing, but now comes a surprise. 13. a3a4 A new move that proves an advantage for White. 13... b5b4  14. c3a2  14... e7c6  15. d4f2  15... f8e7  16. c1b1  16... d7d6 Too passive. 17. a2c1  17... e8g8  18. c1b3 The endgame is very unpleasant for Black. He doesn't have an active plan, and the d6-pawn will suffer pressure from a bishop on g3. The queenside overall is a bit shaky. 18... f8c8  19. f2g3  19... e7f8 This doesn't help Black's position, although it's difficult to recommend active moves. 20. f1e2  20... e6e5 A big positional concession. 21. d1d2  21... a6a5  22. g3f2  22... b7a6 Black tries to do something, but the position becomes even worse after the bishop exchange. 23. e2a6  23... a8a6  24. h1d1  24... f7f6  25. d2d5 White is strategically winning due to the weaknesses on the light squares. 25... g8f7 