Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. Nf3 Na6 7. Bg5 Nxc5 8.
e3 Nce4 9. Qxe4 Nxe4 10. Bxd8 Rxd8 11. a3 Bxc3+ 12. bxc3 b6 13. Bd3 Nxc3 14. a4
Bb7 15. Nd2 d5 16. cxd5 Nxd5 17. Be4 Rac8 18. a5 b5 19. a6 Bc6 20. Nb3 Nb4 21.
Bxc6 Nc2+ 22. Ke2 Nxa1 23. Rxa1 Rxc6 24. Nd4 Rb6 25. Ra5 b4 26. Nb3 Rdd6 27.
Rc5 Rdc6 28. Rh5 Rc3 29. Nc5 b3 30. Na4 Rc2+ 31. Kd3 Rxa6 32. Nc3 Rc6 33. Ne2
b2 34. Rb5 g6 35. Nd4 Rxf2 36. Nxc6 Rxg2 37. Nxa7 Rxh2 38. Nc6 Kg7 39. Rb7 h5
40. Nd8 Kh6 41. Nxf7+ Kg7 42. Ng5+ Kf6 43. Ne4+ Ke5 *
Position (FEN): 8/1R6/4p1p1/4k2p/4N3/3KP3/1p5r/8 w - - 5 44
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 728
Best move: Rb5#