Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O b5 5. d3 Bb7 6. c4 dxc4 7. dxc4 Qxd1 8.
Rxd1 b4 9. Nbd2 Nbd7 10. Nb3 a5 11. Bf4 c5 12. Ne5 Bxg2 13. Kxg2 a4 14. Nd2
Nxe5 15. Bxe5 O-O-O 16. Bxf6 gxf6 17. Nf3 Bg7 18. b3 a3 19. Rab1 h6 20. e4 Kc7
21. Kf1 h5 22. Ke2 Bh6 23. Rxd8 Rxd8 24. Rd1 Rg8 25. h4 Bf8 26. Rd3 Bd6 27. Ne1
Rg4 28. Re3 Be5 29. f4 Bd4 30. Rf3 Kd6 31. Nd3 Rg8 32. Kf1 f5 33. exf5 exf5 34.
Ne1 Re8 35. Nc2 Bc3 36. Rd3+ Kc6 37. Ne3 Re4 38. Nxf5 Re1+ 39. Kf2 Ra1 40. Rd6+
Kc7 41. Ra6 Rxa2+ 42. Kf3 Rb2 43. Ne3 Rxb3 44. Nd5+ Kb7 45. Ra5 Bd4+ 46. Ke4
Rb2 47. Rb5+ Ka6 48. Nc7+ Ka7 49. Kd5 a2 50. Kc6 a1=Q *
Position (FEN): 8/k1N2p2/2K5/1Rp4p/1pPb1P1P/6P1/1r6/q7 w - - 0 51
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1461
Best move: Rb7#