Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. h3 Nf6 5. d3 Be7 6. O-O O-O 7. a3 Be6 8. Nbd2
a6 9. Ba2 Qd7 10. Nh2 Bxh3 11. gxh3 Qxh3 12. Qf3 Qd7 13. Qg3 Nh5 14. Qg4 Qxg4+
15. Nxg4 Nf4 16. Nf3 h5 17. Ngh2 Ne2+ 18. Kh1 Ncd4 19. c3 Nxc1 20. Raxc1 Ne2
21. Rc2 Nf4 22. d4 Kh7 23. dxe5 dxe5 24. Nxe5 f6 25. Nef3 Bd6 26. Rd1 Nh3 27.
Kg2 Nf4+ 28. Kf1 g5 29. Rcd2 g4 30. Nh4 Nh3 31. Kg2 Rae8 32. Nf5 Rxe4 33. Nxd6
cxd6 34. Rxd6 Re2 35. R1d2 Re1 36. Rd7+ Kh6 37. Rxb7 *
Position (FEN): 5r2/1R6/p4p1k/7p/6p1/P1P4n/BP1R1PKN/4r3 b - - 0 37
Black to move.
Themes:  Middlegame Hook Mate, Mate in 1 
Puzzle rating: 919
Best move: Rg1#