Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d5 3. Nf3 Bf5 4. e3 e6 5. Bd3 Bg6 6. Bxg6 hxg6 7. c3 Bd6 8.
Bxd6 Qxd6 9. Ne5 Nc6 10. Qb3 O-O-O 11. Nxc6 Qxc6 12. a4 Rh7 13. a5 a6 14. Ke2
g5 15. Nd2 g4 16. Qc2 Rdh8 17. f3 Rxh2 18. Rxh2 Rxh2 19. Kf2 Qd6 20. b4 g3+ 21.
Kg1 e5 22. Qf5+ Nd7 23. dxe5 Qxe5 24. Qxe5 Nxe5 25. Rd1 Nd3 26. Nf1 Nf2 27.
Rxd5 *
Position (FEN): 2k5/1pp2pp1/p7/P2R4/1P6/2P1PPp1/5nPr/5NK1 b - - 0 27
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 931
Best move: Rh1#