Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4
dxc4 9. Bxc4 O-O 10. O-O Nc6 11. Be3 e5 12. dxe5 Nxe5 13. Be2 Bg4 14. Nfd5 Nxd5
15. Nxd5 Bxe2 16. Nxe7+ Qxe7 17. Qxe2 Nc6 18. Qb5 Rfe8 19. Rfd1 Rad8 20. h3 h6
21. a4 Qc7 22. Qc4 Qe5 23. b3 a6 24. b4 Rxd1+ 25. Rxd1 Qe6 26. Qxe6 Rxe6 27. b5
axb5 28. axb5 Ne5 29. Rd8+ Kh7 30. Bd4 Nc4 31. Rb8 Rd6 32. Bc3 Rd7 33. Rc8 Nd6
34. Rc5 Ne4 35. Rc4 Nxc3 36. Rxc3 Rd1+ 37. Kh2 Rb1 38. Rc7 Rxb5 39. Rxf7 Rb2
40. Kg3 b5 41. Rb7 b4 42. f4 b3 43. f5 Kg8 44. Kf3 Rb1 45. Kg4 b2 46. Kh5 Rf1
47. Rxb2 Rxf5+ 48. Kg6 *
Position (FEN): 6k1/6p1/6Kp/5r2/8/7P/1R4P1/8 b - - 1 48
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1190
Best move: Rg5#