Chess puzzle (Checkmate)
Opening: Italian_Game, Italian_Game_Two_Knights_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke6
8. Nc3 Ne7 9. O-O c6 10. d4 exd4 11. Re1+ Kd6 12. Nxd5 cxd5 13. Bf4+ Kc6 14. a4
a5 15. Qb3 dxc4 *
Position (FEN): r1bq1b1r/1p2n1pp/2k5/p7/P1pp1B2/1Q6/1PP2PPP/R3R1K1 w - - 0 16
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1574
Best move: Qb5#