Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. g3 g6 3. Bg2 Bg7 4. c3 e6 5. d3 d5 6. exd5 exd5 7. Nf3 Bg4 8. O-O
Ne7 9. h3 Bh5 10. g4 Nbc6 11. gxh5 d4 12. h6 Bf6 13. Bg5 Bxg5 14. Nxg5 O-O 15.
c4 Nf5 16. Qd2 Nce7 17. Bxb7 Rb8 18. Bg2 Nh4 19. b3 Nef5 20. Nf3 Nxg2 21. Kxg2
Qf6 22. Rg1 Qc6 23. Qf4 f6 24. Nd2 Rbe8 25. Ne4 a5 26. Rae1 Kh8 27. Kf1 Kg8 28.
Nh4 Ne7 29. f3 Qe6 30. Rg3 Qc6 31. Re2 g5 32. Nf5 Kh8 33. Qg4 Ng6 34. Ned6 Rxe2
35. Kxe2 Nf4+ 36. Kd2 Qb6 37. Nb5 Qe6 38. Rg1 Qe2+ 39. Kc1 Nxd3+ 40. Kb1 *
Position (FEN): 5r1k/7p/5p1P/pNp2Np1/2Pp2Q1/1P1n1P1P/P3q3/1K4R1 b - - 1 40
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1118
Best move: Qb2#