Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bf5 5. b3 e6 6. Bb2 Nbd7 7. d3 h6 8. Nbd2
Be7 9. Qe1 O-O 10. e4 Bh7 11. Qe3 a5 12. a4 Bc5 13. Qe2 Qb6 14. e5 Ne8 15. d4
Be7 16. c4 dxc4 17. Nxc4 Qxb3 18. Nfd2 Bd3 19. Qe3 Bxc4 20. Nxb3 Bxf1 21. Bxf1
Nc7 22. Ba3 Nd5 23. Qc1 Bb4 24. Bg2 Bxa3 25. Qxa3 Nb4 26. Rc1 b6 27. Bxc6 Ra7
28. Bxd7 Rxd7 29. Rc4 Nd5 30. Nd2 f5 31. Rc6 Re8 32. Nc4 Nb4 33. Rxb6 Nc2 34.
Qc5 Rxd4 35. Nd6 Rd1+ 36. Kg2 Ne1+ 37. Kh3 Nf3 38. Rb7 g5 39. Kg2 g4 40. Rg7+
Kh8 41. Qc7 *
Position (FEN): 4r2k/2Q3R1/3Np2p/p3Pp2/P5p1/5nP1/5PKP/3r4 b - - 3 41
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 800
Best move: Rg1#