Chess puzzle (Checkmate)
Moves: 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d3 Bb4 5. Bd2 d6 6. g3 O-O 7. Bg2 Bf5 8. O-O
Bxc3 9. Bxc3 e4 10. Nh4 Be6 11. Bxf6 Qxf6 12. Bxe4 Rad8 13. Qd2 Ne5 14. Bg2 d5
15. cxd5 Bxd5 16. Bxd5 Rxd5 17. Rac1 c6 18. Ng2 Rxd3 19. Qb4 Rd7 20. Rfd1 Rfd8
21. Rxd7 Rxd7 22. Ne3 Qd6 23. Qb3 g6 24. Rd1 Qe6 25. Rxd7 Qxd7 26. Qc3 f6 27.
a4 Kg7 28. Kg2 h5 29. h4 Ng4 30. b3 Nxe3+ 31. Qxe3 Qd5+ 32. Kh2 Qf7 33. b4 b6
34. a5 Qc7 35. a6 c5 36. b5 c4 37. Qe4 Qc5 38. Kg2 c3 39. Qb7+ Kh6 40. Qxa7 c2
41. Qb8 Kg7 42. a7 Qd5+ 43. f3 Qd2 44. Qc7+ Kh6 45. Qf4+ Qxf4 46. gxf4 c1=Q 47.
a8=Q Qxf4 *
Position (FEN): Q7/8/1p3ppk/1P5p/5q1P/5P2/4P1K1/8 w - - 0 48
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 400
Best move: Qh8#