Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. e4 d6 6. Bd3 c5 7. Qc2 cxd4 8. Nxd4
Nc6 9. Be3 Nb4 10. Qd2 Nxd3+ 11. Qxd3 Ng4 12. O-O a6 13. Rad1 Qc7 14. Nd5 Qd8
15. b3 Ne5 16. Qd2 Bd7 17. Bh6 Bc6 18. Bxg7 Kxg7 19. f4 Bxd5 20. exd5 Nd7 21.
f5 Nf6 22. fxg6 hxg6 23. Qg5 Rh8 24. Rde1 Rh5 25. Qg3 Qb6 26. Rf4 Rah8 27. Kh1
Rxh2+ 28. Qxh2 Rxh2+ 29. Kxh2 Qc7 30. Rf3 Ng4+ 31. Kg1 Ne5 32. Rg3 Qd7 33. Rf1
Kf8 34. Nf3 f6 35. Nxe5 dxe5 36. Rxg6 Kf7 37. Rg3 Qd8 38. Re3 Qb6 39. Re1 Qd4
40. Kf1 Qd2 41. R3e2 Qf4+ 42. Kg1 Qd4+ 43. Re3 b5 44. cxb5 axb5 45. Kf1 Qxd5
46. R1e2 Qd1+ 47. Kf2 Qd4 48. Kf3 *
Position (FEN): 8/4pk2/5p2/1p2p3/3q4/1P2RK2/P3R1P1/8 b - - 5 48
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1088
Best move: Qf4#