Chess puzzle (Checkmate)
Moves: 1. b3 d5 2. Bb2 Bg4 3. h3 Bh5 4. g4 Bg6 5. Bg2 e6 6. h4 h5 7. g5 c6 8. d3 Nd7
9. Nf3 a5 10. a4 Ne7 11. Nbd2 Nf5 12. e4 Nd6 13. Qe2 Qb6 14. exd5 cxd5 15. Nd4
Be7 16. O-O Rd8 17. Rfe1 O-O 18. N2f3 Nf5 19. Nxf5 Bxf5 20. Ne5 Nxe5 21. Qxe5
d4 22. Be4 Bd6 23. Qb5 Qc7 24. Re2 Bxe4 25. dxe4 e5 26. Qd3 Rc8 27. Rc1 Bb4 28.
f4 Bc3 29. Bxc3 Qxc3 30. Qxc3 Rxc3 31. fxe5 d3 32. Rd2 Rfc8 33. Kf1 dxc2 34.
Ke2 Kf8 35. Rd7 Rxb3 36. Kd2 Rh3 37. Rxb7 Rxh4 38. Rb5 Rxe4 39. Rxa5 h4 40. e6
Rxe6 41. Rxc2 Rd6+ 42. Kc1 Rxc2+ 43. Kxc2 Ke7 44. Ra7+ Ke6 45. g6 fxg6 46. Rxg7
Kf6 47. Rh7 Kg5 48. a5 Ra6 49. Kd3 Rxa5 50. Ke3 Ra3+ 51. Kf2 Kg4 52. Rg7 g5 53.
Kg2 Ra2+ 54. Kh1 Kf4 55. Rf7+ Kg3 56. Rf1 h3 57. Rg1+ Kh4 58. Rc1 g4 59. Rc4
Rb2 60. Rd4 Rb1+ 61. Kh2 Rb2+ 62. Kh1 Rb5 63. Rc4 Re5 64. Rb4 Rf5 65. Ra4 Kg3
66. Ra3+ Rf3 67. Ra2 Rd3 68. Ra1 Kh4 69. Ra4 Rc3 70. Rb4 Rf3 71. Ra4 Rf5 72.
Rb4 Kg3 73. Rb3+ Kf4 74. Rb4+ Kg5 75. Rb3 Re5 76. Rg3 Kf4 77. Rg1 Re3 78. Rf1+
Kg3 79. Rg1+ Kh4 80. Ra1 g3 81. Ra4+ Kg5 82. Ra5+ Kf4 83. Ra4+ Re4 84. Ra1 Re2
85. Ra4+ Re4 86. Ra1 Kg4 87. Rb1 h2 88. Rc1 Kh3 89. Rg1 Re1 90. Rxe1 *
Position (FEN): 8/8/8/8/8/6pk/7p/4R2K b - - 0 90
Black to move.
Themes: Advanced Pawn Endgame, Rook Endgame Mate in 1 
Puzzle rating: 616
Best move: g2#