Chess puzzle (Checkmate)
Moves: 1. c4 Nf6 2. g3 c5 3. Bg2 Nc6 4. Nc3 e6 5. Nf3 d5 6. cxd5 exd5 7. O-O h5 8. d4
h4 9. Bg5 h3 10. Bh1 Be6 11. Qb3 Qc7 12. Bf4 Qd7 13. Nb5 Rc8 14. Rfd1 c4 15.
Qc2 a6 16. Nc3 Bf5 17. Qd2 Ne4 18. Nxe4 Bxe4 19. Ne5 Nxe5 20. Bxe4 Nc6 21. Bh1
Bd6 22. Qe3+ Kf8 23. Bxd6+ Qxd6 24. Qf3 Ne7 25. e4 dxe4 26. Qxe4 Rc7 27. Rac1
b5 28. Qa8+ Rc8 29. Qe4 Rc7 30. b3 c3 31. Rd3 b4 32. a3 f6 33. axb4 Qxb4 34. d5
Qxe4 35. Bxe4 Nc8 36. Rdxc3 Rxc3 37. Rxc3 Nd6 38. Bd3 a5 39. Rc6 Ke7 40. Ra6
Rc8 41. f4 Rc3 42. Ra7+ Kf8 43. Bc4 Nxc4 44. bxc4 Rxc4 45. Rxa5 Rc1+ 46. Kf2
Rc2+ 47. Kg1 Rg2+ 48. Kh1 Rd2 49. Kg1 Ke7 50. Kh1 *
Position (FEN): 8/4k1p1/5p2/R2P4/5P2/6Pp/3r3P/7K b - - 10 50
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 400
Best move: Rd1#