Chess puzzle (Checkmate)
Moves: 1. Nf3 d6 2. g3 e5 3. Bg2 f5 4. O-O Nf6 5. c4 Be7 6. d4 e4 7. Ng5 c6 8. f3 d5
9. Nc3 O-O 10. Qb3 Kh8 11. cxd5 cxd5 12. fxe4 fxe4 13. e3 Nc6 14. Bd2 h6 15.
Nh3 g5 16. Nf2 Be6 17. Qxb7 Na5 18. Qa6 Qb6 19. Qxb6 axb6 20. b3 Rfc8 21. Rac1
Nc6 22. a4 Na5 23. Rb1 Bb4 24. Rfc1 Rc6 25. Nfd1 Rac8 26. h3 Nh5 27. Kh2 Rf8
28. Be1 Rfc8 29. Bf1 Ng7 30. Bd2 Nf5 31. Bb5 R6c7 32. Ba6 Rf8 33. Be1 h5 34.
Kg2 h4 35. g4 Ng3 36. Rb2 Rcf7 37. Bxg3 hxg3 38. Kxg3 Ba3 39. Rbb1 Bxc1 40.
Rxc1 Nxb3 41. Rb1 Nd2 42. Rxb6 Bc8 43. Bxc8 Rxc8 44. Nxd5 Rc2 45. Rb2 *
Position (FEN): 7k/5r2/8/3N2p1/P2Pp1P1/4P1KP/1Rrn4/3N4 b - - 2 45
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1683
Best move: Nf1#