Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb4 5. Bg5 Bb7 6. e5 h6 7. exf6 hxg5 8. fxg7
Rg8 9. Nf3 Rxg7 10. Be2 g4 11. Ne5 Bxg2 12. Rg1 Bb7 13. Nxg4 f5 14. Bf3 Nc6 15.
d5 Ne5 16. Qe2 Nxg4 17. Bxg4 fxg4 18. O-O-O Qe7 19. Rxg4 Rxg4 20. Qxg4 O-O-O
21. Nb5 Kb8 22. dxe6 dxe6 23. Rxd8+ Qxd8 24. Qxe6 Qd2+ 25. Kb1 Be4+ 26. Qxe4 *
Position (FEN): 1k6/p1p5/1p6/1N6/1bP1Q3/8/PP1q1P1P/1K6 b - - 0 26
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 844
Best move: Qd1#