Chess puzzle (Checkmate)
Opening: Ponziani_Opening, Ponziani_Opening_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. c4 Qd6 6. Nc3 Bg4 7. Ne4 Qd7 8.
Qb3 O-O-O 9. Nc5 Bxc5 10. Be2 f5 11. O-O Nf6 12. a3 Bxf3 13. Bxf3 Nd4 *
Position (FEN): 2kr3r/pppq2pp/5n2/2b1pp2/2Pn4/PQ3B2/1P1P1PPP/R1B2RK1 w - - 1 14
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 685
Best move: Qxb7#