Chess puzzle (Checkmate)
Moves: 1. f4 Nc6 2. Nf3 Nf6 3. e3 d5 4. d4 e6 5. c3 Bd6 6. Bd3 Bd7 7. Nbd2 Qe7 8. O-O
h6 9. Ne5 Ne4 10. Nxe4 dxe4 11. Bxe4 f6 12. Ng6 Qf7 13. Nxh8 Qe7 14. Ng6 Qf7
15. Nh4 O-O-O 16. Qa4 Kb8 17. Qb3 f5 18. Bd3 Qh5 19. Ba6 Na5 20. Qc2 Qxh4 21.
Bd3 g5 22. b4 gxf4 23. exf4 Nc6 24. Be3 Ne7 25. b5 Nd5 26. Rf3 Nxe3 27. Rxe3
Qxf4 28. Rg3 c5 29. Rf1 Qh4 30. Rh3 Qf6 31. dxc5 Bxc5+ 32. Kh1 b6 33. Qd2 Bxb5
34. Qf4+ e5 35. Qd2 e4 36. Qf4+ Bd6 37. Rxh6 Bxf4 38. Rxf6 exd3 39. Rxf4 d2 40.
Rd4 d1=Q+ 41. Rxd1 *
Position (FEN): 1k1r4/p7/1p3R2/1b3p2/8/2P5/P5PP/3R3K b - - 0 41
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 1187
Best move: Rxd1#