Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Goring_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 d6 6. Bc4 Be7 7. Qb3 Na5 8.
Bxf7+ Kf8 9. Qa4 c6 10. Bb3 b5 11. Qd4 c5 12. Qd5 Nxb3 13. Qxb3 a6 14. O-O Bb7
15. Bf4 Nf6 16. e5 Bxf3 *
Position (FEN): r2q1k1r/4b1pp/p2p1n2/1pp1P3/5B2/1QN2b2/PP3PPP/R4RK1 w - - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1159
Best move: exf6