Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bg5 O-O 6. Qd2 c6 7. O-O-O b5 8. Bd3
b4 9. Ne2 a5 10. Bh6 Ba6 11. Bxg7 Kxg7 12. h4 Bxd3 13. cxd3 h5 14. Kb1 a4 15.
Ng5 Qa5 16. Rc1 Nbd7 17. Rxc6 Qb5 18. Rhc1 Rfb8 19. Rc7 Ra6 20. f3 Rab6 21. Nf4
R6b7 22. Rxb7 Rxb7 23. Qc2 b3 24. axb3 axb3 25. Qc4 Qxc4 26. dxc4 e5 27. dxe5
dxe5 28. Nd5 Nc5 29. Rc3 Nfd7 30. g3 f6 31. Nh3 Ra7 32. Nf2 Rb7 33. Nd3 Na4 34.
Rc1 Ndc5 35. Nxc5 Nxc5 36. Rd1 Kf7 37. Ne3 Ne6 38. Nd5 Ra7 39. Rc1 Nd4 40. f4
Ra4 41. Rc3 Ke6 42. c5 Nc6 43. fxe5 fxe5 44. Rxb3 Rxe4 45. Nc7+ Kd7 46. Nd5 Rd4
47. Rb7+ Ke6 48. Nc7+ Kf5 49. Rb6 Nb4 50. Nb5 *
Position (FEN): 8/8/1R4p1/1NP1pk1p/1n1r3P/6P1/1P6/1K6 b - - 11 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 493
Best move: Rd1#