Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. d5 d6 3. f3 e5 4. e4 g6 5. Bd3 Bg7 6. c4 O-O 7. Ne2 Nh5 8. O-O f5
9. Nbc3 f4 10. b4 Nd7 11. Bd2 a6 12. a4 g5 13. a5 Nhf6 14. b5 Nc5 15. Be1 g4
16. Bh4 Qe8 17. Bxf6 Bxf6 18. fxg4 Bxg4 19. Qd2 Nb3 20. Qb2 Nxa1 21. Qxa1 Kh8
22. Qe1 Rg8 23. g3 Bh3 24. Rf2 Qg6 25. Kh1 fxg3 26. Nxg3 Raf8 27. Bf1 Qh6 28.
Bxh3 Qxh3 29. Nce2 Bh4 30. Rxf8 Rxf8 31. bxa6 bxa6 32. Qg1 Rf3 33. Qc1 Rf2 34.
Qg1 Rf3 35. Qc1 Bxg3 36. Nxg3 Rxg3 37. Qe1 Rf3 38. Qd1 Rf1+ 39. Qxf1 *
Position (FEN): 7k/2p4p/p2p4/P2Pp3/2P1P3/7q/7P/5Q1K b - - 0 39
Black to move.
Themes: Hanging Piece Endgame, Queen Endgame Mate in 1 
Puzzle rating: 965
Best move: Qxf1#