Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. Nc3 Nf6 6. h3 d6 7. a3 O-O 8. b4 Bb6
9. a4 a5 10. b5 Nd4 11. Nxd4 Bxd4 12. Bb2 c6 13. bxc6 bxc6 14. Ra2 d5 15. Bb3
Ba6 16. Ne2 Bxb2 17. Rxb2 dxe4 18. O-O exd3 19. cxd3 Re8 20. d4 Bxe2 21. Qxe2
exd4 22. Qd3 c5 23. f3 Rc8 24. Qb5 d3 25. Rd1 Re7 26. Rxd3 Rd7 27. Rbd2 Rxd3
28. Rxd3 Qe7 29. Qxa5 c4 30. Qa6 cxd3 31. Qxc8+ Kh7 32. Qf5+ g6 33. Qxd3 Qe1+
34. Kh2 Nh5 35. Qd6 Kg7 36. Qc7 Kf6 37. a5 Qd2 38. Qxf7+ Kg5 39. Qe7+ Kf4 40.
Qh4+ Ke3 41. a6 Nf4 42. Qg3 h5 43. a7 Qa5 44. Bf7 Qxa7 45. Bxg6 Qa2 46. Bxh5
Nxh5 47. Qe5+ Kf2 48. Qxh5 Kf1 49. Qg4 Qf2 50. Qg3 *
Position (FEN): 8/8/8/8/8/5PQP/5qPK/5k2 b - - 4 50
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 980
Best move: Qg1#