Chess puzzle (Advantage)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Bg5 h6 7. Bxf6 Bxf6 8. Be2
e5 9. d5 a5 10. O-O Na6 11. a3 Nc5 12. Re1 Bd7 13. Qc2 a4 14. Nd2 Bg7 15. f3 f5
16. b4 axb3 17. Nxb3 Nxb3 18. Qxb3 b6 19. Nb5 Bxb5 20. cxb5 Kh8 21. Rec1 Ra7
22. Rc6 Rf7 23. a4 fxe4 24. fxe4 Qh4 25. Bf3 Qf4 26. Rac1 g5 27. h3 Bf6 28. a5
Rxa5 29. Qb2 Bd8 30. Ra1 Qe3+ 31. Kh1 Rxf3 32. gxf3 Qxf3+ 33. Kg1 Qxh3 34. Rxa5
bxa5 35. b6 Qg4+ 36. Kf1 cxb6 37. Rxd6 Qf4+ *
Position (FEN): 3b3k/8/1p1R3p/p2Pp1p1/4Pq2/8/1Q6/5K2 w - - 1 38
White to move.
Themes: Defensive Move Endgame  
Puzzle rating: 850
Best move: Qf2