Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. Nf3 cxd4 3. Nxd4 b6 4. c4 Bb7 5. Nc3 a6 6. b3 e6 7. Bb2 Qc7 8. Rc1
Nf6 9. f3 d6 10. e4 Nbd7 11. Be2 Rc8 12. O-O Be7 13. Kh1 O-O 14. Qd2 Rfe8 15.
Rfd1 Qb8 16. Bd3 Bd8 17. Bb1 Bc7 18. Nde2 Ba8 19. Ng3 b5 20. Nce2 bxc4 21. Rxc4
d5 22. exd5 Bxd5 23. Rh4 Be5 24. Bxe5 Qxe5 25. Rd4 Nf8 26. Nf4 Bb7 27. Be4 Nxe4
28. Nxe4 Bxe4 29. Rxe4 Qf5 30. Ne2 h6 31. Ng3 Qb5 32. Rd4 Ng6 33. Ne4 Nh4 34.
Nd6 Qh5 35. Nxe8 Rxe8 36. Rd8 Rxd8 37. Qxd8+ Kh7 38. Qd3+ f5 39. Qxa6 Nxf3 40.
Qe2 *
Position (FEN): 8/6pk/4p2p/5p1q/8/1P3n2/P3Q1PP/3R3K b - - 1 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 516
Best move: Qxh2#