Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nc6 5. Nc3 a6 6. Bf4 h6 7. Rc1 Nf6 8. e3
Bg4 9. Be2 e6 10. h3 Bh5 11. Ne5 Bxe2 12. Qxe2 Nxe5 13. Bxe5 Bd6 14. Bxd6 Qxd6
15. O-O Rc8 16. Na4 Rxc1 17. Rxc1 O-O 18. Qc2 Qb4 19. a3 Qb5 20. Nc3 Qc4 21. b3
Qc6 22. Na4 Qb5 23. Nc5 b6 24. Nb7 Ne4 25. f3 Ng3 26. Kh2 Nf5 27. Qc3 Qe2 28.
Re1 Qf2 29. e4 Nxd4 30. exd5 exd5 31. Re7 Ne2 32. Qa1 Qg3+ 33. Kh1 Nf4 34. Qf1
a5 35. a4 Qg5 36. Re1 Rb8 37. Nd6 Qg6 38. Nb5 Rc8 39. Nd4 Qd3 40. Qxd3 Nxd3 41.
Re3 Nf4 42. Kh2 Kf8 43. g3 Ng6 44. Kg2 Re8 45. Rc3 Ne5 46. Rc7 Nd3 47. Rc6 Re1
48. Rxb6 Rd1 49. Nf5 g6 *
Position (FEN): 5k2/5p2/1R4pp/p2p1N2/P7/1P1n1PPP/6K1/3r4 w - - 0 50
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 560
Best move: Rb8#