Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nf3 b6 3. d4 Bb7 4. Bd3 Nf6 5. Bg5 Be7 6. Bxf6 Bxf6 7. e5 Bg5 8.
Nc3 h6 9. Ne4 f5 10. Nexg5 hxg5 11. Qd2 g4 12. Ng5 Rh5 13. h4 g6 14. Rh2 Nc6
15. Bb5 Ne7 16. O-O-O Nd5 17. g3 a6 18. Bd3 Bc6 19. c4 Ne7 20. Kb1 d6 21. exd6
Qxd6 22. Bc2 O-O-O 23. Rhh1 Bb7 24. Rhe1 Nc6 25. Rxe6 Qxd4 26. Qxd4 Rxd4 27.
Rxd4 Nxd4 28. Rxg6 Bc6 29. Rg8+ Kb7 30. Rf8 Bd7 31. Rf7 Kc6 32. Ba4+ b5 33.
cxb5+ axb5 34. Bc2 Rh8 35. Rf6+ Kb7 36. Nf7 Re8 37. b3 Re1+ 38. Kb2 Re2 39. Kc3
Nxc2 40. Nd8+ Kc8 41. Rf8 Rxf2 42. Ne6+ Kb7 43. Nd8+ Kb6 44. Rf6+ Ka5 *
Position (FEN): 3N4/2pb4/5R2/kp3p2/6pP/1PK3P1/P1n2r2/8 w - - 6 45
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1497
Best move: Nb7#