Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Bc4 Nc6 3. Nf3 Nf6 4. d3 e6 5. Bg5 Be7 6. Nc3 d5 7. exd5 exd5 8.
Bb5 O-O 9. O-O Bg4 10. Bxc6 bxc6 11. h3 Bh5 12. g4 Nxg4 13. Bxe7 Qxe7 14. hxg4
Bxg4 15. Kg2 Rad8 16. Re1 Qf6 17. Re3 d4 18. Ne4 Bxf3+ 19. Rxf3 Qe7 20. Rg3 f5
21. Ng5 f4 22. Rg4 h6 23. Ne4 f3+ 24. Kg3 Qe5+ 25. Kh3 Rf5 26. Qg1 Rh5+ 27. Rh4
Qf5+ 28. Qg4 Rxh4+ 29. Kxh4 g5+ 30. Kg3 Qe5+ 31. Kxf3 Rf8+ 32. Kg2 Rf4 33. Qc8+
Kg7 34. Qd7+ Kg8 35. Qxc6 Rh4 36. Rh1 Rg4+ 37. Kf1 Qf4 38. Rxh6 Qc1+ 39. Ke2
Qxc2+ 40. Kf3 *
Position (FEN): 6k1/p7/2Q4R/2p3p1/3pN1r1/3P1K2/PPq2P2/8 b - - 1 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1855
Best move: Qd1#