Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. c3 Bc5 4. b4 Bb6 5. a4 a6 6. b5 axb5 7. Bxb5 Na7 8. Bc4
Nc6 9. Bb5 Na7 10. Bc4 Nc6 11. d3 Nf6 12. Bg5 h6 13. Bxf6 Qxf6 14. O-O O-O 15.
Nbd2 d6 16. h3 Kh8 17. Bb5 Ne7 18. Qb3 Ng8 19. Rac1 c6 20. Bc4 Bd8 21. d4 exd4
22. cxd4 Qg6 23. Kh1 Nf6 24. Rce1 Nh5 25. e5 Nf4 26. g4 Nxh3 27. exd6 Bxg4 28.
Ne5 Qh5 29. Nxf7+ Kh7 30. Bd3+ g6 31. Re5 Bf3+ 32. Nxf3 Qxf3+ 33. Kh2 Kg7 34.
Bc4 Qxb3 35. Bxb3 Nf4 36. Nxd8 Raxd8 37. Re7+ Rf7 38. Bxf7 Rxd6 39. Rxb7 Rxd4
40. Be8+ Kf6 41. Bxc6 Ne2 42. f3 Rh4+ 43. Kg2 Nf4+ 44. Kg3 g5 45. Rfb1 Ne2+ 46.
Kf2 Nc3 47. R1b4 Rh2+ 48. Kg3 Ra2 49. R7b6 Ne2+ 50. Kh3 Nf4+ 51. Kg3 *
Position (FEN): 8/8/1RB2k1p/6p1/PR3n2/5PK1/r7/8 b - - 13 51
Black to move.
Themes:  Endgame Hook Mate, Mate in 1 
Puzzle rating: 1163
Best move: Rg2#