Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. Nc3 cxd4 5. exd4 Qb6 6. Nxd5 Qa5+ 7. Nc3 e6 8.
Ne2 Nf6 9. a3 Nd5 10. Bd2 Qb6 11. Nxd5 exd5 12. Bc3 Bg4 13. f3 Bh5 14. Qd2 Bd6
15. g4 Bg6 16. h4 f6 17. h5 Bf7 18. h6 g5 19. f4 O-O-O 20. O-O-O Qc7 21. fxg5
fxg5 22. Qxg5 Rhe8 23. Kb1 Bg6 24. Nc1 Re4 25. Bd3 Nxd4 26. Bxe4 Bxe4 27. Rxd4
Bxh1 28. Rd1 Be4 29. Nd3 Be7 30. Qg7 Rd7 31. Ne5 Rd8 32. Nf7 Rf8 33. Ng5 Rd8
34. Ne6 Qd7 35. Nxd8 Qxd8 36. g5 a6 37. Bf6 Bxf6 38. Qxf6 Qe8 39. Re1 Bxc2+ 40.
Kxc2 Qxe1 41. Qf8+ Kc7 42. Qg7+ Kb6 43. Qxh7 Qe2+ 44. Kb3 *
Position (FEN): 8/1p5Q/pk5P/3p2P1/8/PK6/1P2q3/8 b - - 2 44
Black to move.
Themes:  Endgame, Queen Endgame Dovetail Mate, Mate in 1 
Puzzle rating: 947
Best move: Qc4#