Chess puzzle (Checkmate)
Moves: 1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Be3 Nf6 5. f3 Nc6 6. Qd2 a6 7. a4 Rb8 8. Be2
O-O 9. g4 e5 10. d5 Nb4 11. Na2 Nxa2 12. Rxa2 Bd7 13. Bh6 c6 14. Bxg7 Kxg7 15.
h4 cxd5 16. exd5 e4 17. f4 Nxg4 18. h5 e3 19. Qd4+ Qf6 20. h6+ Kg8 21. Nf3 Qxd4
22. Nxd4 Nf2 23. Rg1 Nh3 24. Rf1 Rbc8 25. Ra3 Rfe8 26. Rf3 Nf2 27. Raxe3 Ne4
28. b3 Bg4 29. Rf1 Bxe2 30. Kxe2 Re7 31. Kd1 Rce8 32. Ref3 Nf6 33. c4 Ng4 34.
Kd2 Nh2 35. f5 Nxf3+ 36. Rxf3 Re4 37. Kd3 Rh4 38. fxg6 fxg6 39. Rf6 Rh3+ 40.
Kd2 Rd8 41. Ne6 Rd7 *
Position (FEN): 6k1/1p1r3p/p2pNRpP/3P4/P1P5/1P5r/3K4/8 w - - 6 42
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1246
Best move: Rf8#