Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2
Nc6 9. O-O-O Nxd4 10. Bxd4 Be6 11. g4 Qa5 12. Kb1 Rfc8 13. Nd5 Qxd2 14. Nxf6+
Bxf6 15. Rxd2 Bxd4 16. Rxd4 Rc5 17. Be2 Rac8 18. c3 Kg7 19. h4 h6 20. Rc1 Kf6
21. a3 Ke5 22. Kc2 a5 23. Kd2 g5 24. Ke3 Bb3 25. Rh1 f6 26. hxg5 hxg5 27. Rh7
R8c7 28. Bd1 Rb5 29. Bxb3 Rxb3 30. Rd2 b5 31. Rh5 b4 32. axb4 axb4 33. f4+ Ke6
34. fxg5 bxc3 35. bxc3 Rcxc3+ 36. Kd4 Rg3 37. gxf6 *
Position (FEN): 8/4p3/3pkP2/7R/3KP1P1/1r4r1/3R4/8 b - - 0 37
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1125
Best move: Rb4#