Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. e4 b6 3. Bf4 Bb7 4. Nc3 Nf6 5. Bd3 Bb4 6. Ne2 Nxe4 7. O-O Nxc3 8.
Nxc3 Be7 9. Qg4 g6 10. Ne4 d6 11. c4 Nd7 12. Bh6 f5 13. Qe2 fxe4 14. Bxe4 Bxe4
15. Qxe4 Nf6 16. Qxe6 Qd7 17. Qe2 O-O-O 18. c5 dxc5 19. dxc5 Bxc5 20. a3 Rhe8
21. Qa6+ Kb8 22. b4 Bf8 23. Bf4 Nh5 24. Bg5 Be7 25. Be3 Qc8 26. Qc4 Qf5 27. a4
Bd6 28. a5 Qe5 29. f4 Qxe3+ 30. Kh1 Bxf4 31. a6 Bd6 32. Qc6 Qe4 33. Qa4 Qe5 34.
g3 Nxg3+ 35. hxg3 Qxg3 36. Ra2 Qh3+ 37. Kg1 Re3 38. Qc6 Qg4+ 39. Rg2 Qd4 *
Position (FEN): 1k1r4/p1p4p/PpQb2p1/8/1P1q4/4r3/6R1/5RK1 w - - 8 40
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 832
Best move: Qb7#