Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. c3 c6 4. Qc2 g6 5. Bf4 Bf5 6. Qb3 Qb6 7. Nbd2 Nbd7 8. h3
Bg7 9. g4 Be4 10. Nxe4 Nxe4 11. Bg2 O-O 12. O-O Rfe8 13. Bh2 e5 14. dxe5 Nxe5
15. Rad1 Rad8 16. Qc2 Nxf3+ 17. Bxf3 Be5 18. Bxe5 Rxe5 19. Kg2 Rde8 20. Rd4 Ng5
21. e3 Nxf3 22. Kxf3 h5 23. Rfd1 Qc7 24. Kg2 Qe7 25. c4 Qh4 26. cxd5 cxd5 27.
Qb3 b6 28. Rf4 Rg5 29. Rdd4 Ree5 30. Qc3 hxg4 31. Rxg4 Rxg4+ 32. Rxg4 Qe7 33.
Qc8+ Kg7 34. Qc3 f6 35. h4 Kf7 36. Rf4 Qe6 37. Kh2 Kg7 38. a4 Re4 39. Rxe4 dxe4
40. Qc7+ Kh6 41. Qf4+ g5 42. hxg5+ fxg5 43. Qc7 Qf5 44. Qg3 Kg6 45. b4 a5 46.
Qd6+ Kh5 47. Kg1 axb4 48. Qxb4 Qe6 49. Kf1 Kg4 50. Qb5 Kf3 *
Position (FEN): 8/8/1p2q3/1Q4p1/P3p3/4Pk2/5P2/5K2 w - - 5 51
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 716
Best move: Qe2#