Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. g3 Nbd7 4. Bg2 e6 5. a3 c5 6. dxc5 Bxc5 7. b4 Bb6 8. Bb2
O-O 9. e3 a5 10. b5 a4 11. O-O Ra5 12. Qe2 h6 13. Bc3 Ra8 14. Bb4 Bc5 15. c4
Qb6 16. Nc3 Ne4 17. Nxe4 dxe4 18. Nd4 f5 19. Bxc5 Nxc5 20. f3 e5 21. Nc2 Be6
22. Nb4 Rad8 23. fxe4 Nxe4 24. Rac1 Rd2 25. c5 Qa5 26. Qe1 Rfd8 27. c6 Qxb5 28.
Bxe4 fxe4 29. c7 R8d6 30. c8=Q+ Bxc8 31. Rxc8+ Kh7 32. Rc2 Qd7 33. Rf7 Qd8 34.
Rxd2 Rxd2 35. Rf1 Qd7 36. h4 Kg6 37. Qc1 Kh5 38. Qc3 g5 39. hxg5 hxg5 40. Qc4
Qh3 41. Qf7+ Kg4 42. Qf5+ Kxg3 43. Qxe5+ Kh4 44. Qxe4+ g4 45. Qe7+ Kg3 46. Qe5+
Kh4 47. Qf6+ Kg3 48. Rf3+ gxf3 *
Position (FEN): 8/1p6/5Q2/8/pN6/P3Ppkq/3r4/6K1 w - - 0 49
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1858
Best move: Qf4#