Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 c5 3. c3 Nc6 4. Bf4 Nf6 5. e3 Bg4 6. Qb3 Qb6 7. dxc5 Qxb3 8.
axb3 Bxf3 9. gxf3 e5 10. Bg5 Bxc5 11. Bxf6 gxf6 12. b4 Bb6 13. b5 Ne7 14. Na3
Rg8 15. O-O-O f5 16. Bh3 f6 17. Rhg1 Kf7 18. c4 d4 19. e4 fxe4 20. fxe4 Rxg1
21. Rxg1 Bc5 22. Kc2 a6 23. bxa6 Rxa6 24. Nb5 Ra4 25. Kd3 Rb4 26. Bf5 Nxf5 27.
exf5 Rxb2 28. Rg2 Rb3+ 29. Ke4 Rh3 30. f3 Rh4+ 31. Kd5 b6 32. Nc7 Rf4 33. Ne6
Rxf5 34. Rg7+ Ke8 35. Rxh7 Rxf3 36. Nc7+ Kf8 37. Ke6 d3 38. Nd5 d2 39. Nxf6
d1=Q *
Position (FEN): 5k2/7R/1p2KN2/2b1p3/2P5/5r2/7P/3q4 w - - 0 40
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1733
Best move: Rf7#