Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 c5 3. dxc5 f6 4. b4 e5 5. Bg3 Nc6 6. a3 Bf5 7. e3 Nh6 8. Bb5 a6
9. Bxc6+ bxc6 10. Nf3 Be7 11. c3 O-O 12. O-O e4 13. Nh4 Bg4 14. f3 exf3 15.
Nxf3 f5 16. Qd4 Bf6 17. Be5 Bxf3 18. Rxf3 Ng4 19. Bxf6 Nxf6 20. Rxf5 Ne4 21.
Rxf8+ Qxf8 22. h3 Qf2+ 23. Kh1 Qe1+ 24. Kh2 Qg3+ 25. Kg1 Rf8 26. a4 Rf1+ 27.
Kxf1 *
Position (FEN): 6k1/6pp/p1p5/2Pp4/PP1Qn3/2P1P1qP/6P1/RN3K2 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 843
Best move: Qf2#