Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nd5 Nxd5 5. exd5 e4 6. Qe2 f5 7. c3 Ba5 8. d3
O-O 9. dxe4 fxe4 10. Ng5 h6 11. Nxe4 d6 12. Bd2 Nd7 13. O-O-O Ne5 14. f3 Bf5
15. g4 Bxe4 16. fxe4 Bb6 17. Be3 Bxe3+ 18. Qxe3 Nxg4 19. Qh3 Nf2 20. Qe6+ Kh8
21. Bh3 Qg5+ 22. Kb1 Nxh1 23. Rxh1 Rae8 24. Qd7 Rxe4 25. Qxc7 Qxd5 26. Rg1 Qd3+
27. Ka1 Rf1+ 28. Bxf1 *
Position (FEN): 7k/ppQ3p1/3p3p/8/4r3/2Pq4/PP5P/K4BR1 b - - 0 28
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 630
Best move: Qd1#