Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ngf3 Be7 8. Be2
O-O 9. O-O f6 10. h3 cxd4 11. cxd4 fxe5 12. fxe5 Qb6 13. Nb3 Ndxe5 14. Nxe5
Rxf1+ 15. Qxf1 Nxe5 16. Kh1 Nc6 17. Bg4 Bf6 18. Be3 Bd7 19. Rd1 Rf8 20. Qe2 Qb4
21. Nc5 Bc8 22. Nxe6 Re8 23. Nc7 Bxg4 24. hxg4 Nxd4 25. Rxd4 Bxd4 26. Nxe8 Qe7
27. Nc7 Bxe3 28. Nxd5 *
Position (FEN): 6k1/pp2q1pp/8/3N4/6P1/4b3/PP2Q1P1/7K b - - 0 28
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 850
Best move: Qh4#