Chess puzzle (Checkmate)
Moves: 1. e4 b6 2. Nf3 Bb7 3. Nc3 g6 4. d4 Bg7 5. Bc4 e6 6. O-O d6 7. Bb5+ Nd7 8. a4
a6 9. Bc4 h6 10. Be3 Qe7 11. b4 g5 12. h3 g4 13. hxg4 h5 14. Bg5 Bf6 15. Bxf6
Ngxf6 16. e5 dxe5 17. dxe5 Nxg4 18. Ne2 Bxf3 19. gxf3 Ngxe5 20. Bd3 Nxf3+ 21.
Kg2 Nh4+ 22. Kh1 Qxb4 23. Rg1 a5 24. Ng3 Nf3 25. Qxf3 O-O-O 26. Ba6+ Kb8 *
Position (FEN): 1k1r3r/2pn1p2/Bp2p3/p6p/Pq6/5QN1/2P2P2/R5RK w - - 3 27
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 738
Best move: Qb7#