Chess puzzle (Checkmate)
Moves: 1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. Nc3 g6 5. d3 Bg7 6. a3 O-O 7. Nf3 d6 8. Rb1
Bg4 9. Nd2 Nd4 10. h3 Bf5 11. Bxb7 Rb8 12. Bg2 c6 13. O-O d5 14. cxd5 cxd5 15.
g4 Be6 16. e3 Nc6 17. b4 a6 18. Qa4 Qb6 19. Nb3 Bd7 20. Nc5 Be8 21. Qxa6 Qc7
22. Nxd5 Nxd5 23. Bxd5 Rb6 24. Qc4 Na5 25. Qa2 Qb8 26. Bd2 Nc6 27. e4 Nd4 28.
Be3 Nf3+ 29. Kg2 Nd4 30. Bxd4 exd4 31. f4 g5 32. fxg5 Be5 33. Rf5 Qd6 34. Rbf1
Bh2 35. Kh1 Qg3 36. Qxh2 Qe3 37. R1f3 Qc1+ 38. Qg1 Qxa3 39. Qxd4 Rxb4 40. Qf6
Rb1+ 41. Rf1 Rxf1+ 42. Rxf1 Qxc5 43. Rf3 Qc1+ 44. Kg2 Qd2+ 45. Kg3 Qe1+ 46. Rf2
Qg1+ 47. Kh4 Qe1 48. Kh5 Qh1 49. Rf3 Qe1 50. Kh6 *
Position (FEN): 4brk1/5p1p/5Q1K/3B2P1/4P1P1/3P1R1P/8/4q3 b - - 15 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 519
Best move: Qh4#