Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. Nf3 e5 5. Nc3 Bb4 6. e3 Bg4 7. Be2 Bxf3 8.
Bxf3 e4 9. Be2 O-O-O 10. Bd2 Bxc3 11. bxc3 Nf6 12. O-O Qg5 13. Rb1 h5 14. Qb3
b6 15. Ba6+ Kb8 16. Qc4 Na5 17. Qxf7 Rd7 18. Qe6 Ng4 19. c4 Rd6 20. Qxe4 Nc6
21. c5 Qd5 22. Qc2 h4 23. cxd6 Qxd6 24. f4 Nxd4 25. Qe4 Nc6 26. Bb4 Qf6 27.
Rfc1 Nd8 28. Be7 Qe6 29. Qxe6 Nxe6 30. Rc3 Nf6 31. Bxf6 gxf6 32. Bc4 Nc5 33.
Rd1 Re8 34. Kf2 Ne4+ 35. Kf3 Nxc3 36. Rd7 f5 37. Rh7 Ne4 38. Ke2 Rd8 39. Rxh4
Rd2+ 40. Kf3 *
Position (FEN): 1k6/p1p5/1p6/5p2/2B1nP1R/4PK2/P2r2PP/8 b - - 2 40
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 635
Best move: Rf2#