Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 c6 3. dxc6 Nxc6 4. Nc3 e5 5. d3 b6 6. Nf3 Bb7 7. Be2 Bd6 8.
O-O Nd4 9. Nxd4 exd4 10. Ne4 Qh4 11. g3 Qe7 12. Nxd6+ Qxd6 13. Bf3 Qd7 14. Re1+
Ne7 15. Bxb7 Qxb7 16. Bg5 f6 17. Bf4 O-O 18. Bd6 Rfe8 19. Re4 Nf5 20. Rxe8+
Rxe8 21. Bf4 Qe7 22. c3 dxc3 23. bxc3 Qa3 24. Qb3+ Qxb3 25. axb3 Rd8 26. d4 a5
27. Bc7 Rc8 28. Bxb6 Rxc3 29. Bxa5 Rxb3 30. Rd1 Kf7 31. d5 Ke7 32. g4 Nh6 33.
d6+ Kd7 34. Rd4 Nf7 35. Bc7 Ng5 36. Kg2 Ne6 37. Rc4 g5 38. f3 Nf4+ 39. Kg3 Rb2
40. h4 *
Position (FEN): 8/2Bk3p/3P1p2/6p1/2R2nPP/5PK1/1r6/8 b - - 0 40
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 1015
Best move: Rg2#