Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d6 3. e3 Nc6 4. Nf3 g6 5. Nbd2 Bg7 6. c3 O-O 7. Bc4 a6 8. a4
Rb8 9. a5 Re8 10. e4 e5 11. dxe5 dxe5 12. Be3 Ng4 13. Bg5 Qd6 14. Qb3 Be6 15.
O-O h6 16. Bh4 g5 17. Bg3 b5 18. Bxe6 Rxe6 19. Rfd1 Qe7 20. Nf1 h5 21. h3 Nh6
22. Ne3 h4 23. Bh2 Rg6 24. Nd5 Qc5 25. Rd2 Kh7 26. Rad1 Nxa5 27. Qa2 Nc4 28.
Rd3 f5 29. b4 Qf8 30. exf5 Qxf5 31. Ne7 Qf7 32. Nxg6 Qxg6 33. Rd7 e4 34. Ne5
Qe6 35. Nxc4 bxc4 36. Qd2 Rf8 37. Qxg5 Nf5 38. Rxc7 e3 39. fxe3 Qxe3+ 40. Qxe3
Nxe3 41. Rdd7 *
Position (FEN): 5r2/2RR2bk/p7/8/1Pp4p/2P1n2P/6PB/6K1 b - - 1 41
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 425
Best move: Rf1#