Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. a3 Bxc3+ 7. bxc3 d5 8.
cxd5 Nxd5 9. Qc2 cxd4 10. cxd4 Nc6 11. Bd3 f5 12. O-O Rf6 13. e4 fxe4 14. Bxe4
h6 15. Bb2 Nf4 16. d5 Nxd5 17. Bxd5 exd5 18. Bxf6 Qxf6 19. h3 Bf5 20. Qb3 Be4
21. Qxb7 Rb8 22. Qd7 Bxf3 23. gxf3 Ne5 24. Qxd5+ Kh8 25. f4 Ng6 26. Rab1 Rd8
27. Qf3 Nxf4 28. Rb4 Qg5+ 29. Kh2 Rf8 30. Rg1 Qe5 31. Qg3 Qf6 32. Rb7 g5 33.
Qg4 Qe5 34. Rg3 Qd4 35. Rf3 Qe4 36. Qd7 Rg8 37. Rxf4 Qxf4+ 38. Kg2 Qe4+ 39. f3
Qe2+ 40. Kg3 Qe5+ 41. Kg4 Qf4+ 42. Kh5 *
Position (FEN): 6rk/pR1Q4/7p/6pK/5q2/P4P1P/8/8 b - - 6 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 946
Best move: Qh4#