Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d6 5. Nbd2 O-O 6. e4 Bg4 7. Be2 Bxf3 8.
Bxf3 e6 9. O-O Nbd7 10. g3 c6 11. c4 Ne8 12. Qc2 h5 13. Bg2 h4 14. f4 h3 15.
Bxh3 Ndf6 16. e5 dxe5 17. dxe5 Nd7 18. Ne4 Qb6+ 19. Kh1 Qc7 20. Rfd1 Rd8 21.
Ba3 c5 22. Nxc5 Nxc5 23. Rxd8 Qxd8 24. Bxc5 Nc7 25. Bxf8 Bxf8 26. Rd1 Qe7 27.
Bg2 b6 28. Bc6 Qc5 29. Qg2 Na6 30. Rd8 Nb4 31. Bb7 Kg7 32. Rc8 Qe3 33. Rd8 Nd3
34. h3 Nf2+ 35. Kh2 Bc5 36. Bf3 Nd3 37. Be4 Ne1 38. Qh1 Qf2+ 39. Bg2 *
Position (FEN): 3R4/p4pk1/1p2p1p1/2b1P3/2P2P2/1P4PP/P4qBK/4n2Q b - - 10 39
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1234
Best move: Nf3#