Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Be2 e6 6. Nc3 dxc4 7. Bxc4 Bb4 8. O-O
O-O 9. Be2 Nd5 10. Qc2 Qa5 11. Bd2 Nd7 12. a3 Bxc3 13. bxc3 Qc7 14. c4 N5f6 15.
Rac1 Rfd8 16. h3 Bh5 17. Bc3 Rac8 18. e4 Bg6 19. Bd3 Nb6 20. e5 Nfd7 21. Bxg6
hxg6 22. Bb2 c5 23. Rfe1 cxd4 24. Nxd4 Qxc4 25. Qd2 Qd5 26. Qe2 Rxc1 27. Rxc1
Qxe5 28. Qd2 Qd5 29. Qb4 Nf6 30. Nf3 Qd6 31. Qh4 Nh5 32. g4 Nf4 33. Ng5 Ne2+
34. Kg2 Qd5+ 35. f3 Nf4+ 36. Kg3 Ne2+ 37. Kg2 Nxc1 38. Qh7+ Kf8 39. Qxg7+ Ke7
40. Qxf7+ Kd6 41. Qf4+ Kc6 42. Qxc1+ Qc4 43. Qe3 Qc2+ 44. Kg3 Qxb2 45. Qe4+ Kb5
46. Nxe6 Rc8 47. Qd3+ Ka5 48. Nd4 Qc3 *
Position (FEN): 2r5/pp6/1n4p1/k7/3N2P1/P1qQ1PKP/8/8 w - - 5 49
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1170
Best move: Qb5#