Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. Nc3 Nxe4 5. Nxe4 d5 6. Bxd5 Qxd5 7. Nc3 Qa5
8. O-O Be7 9. d4 Bg4 10. d5 Nd4 11. Re1 Nxf3+ 12. gxf3 Bh3 13. Rxe5 Qc5 14. Qe1
f6 15. Re2 Kf7 16. Bf4 Rhe8 17. Ne4 Qxd5 18. Rd1 *
Position (FEN): r3r3/ppp1bkpp/5p2/3q4/4NB2/5P1b/PPP1RP1P/3RQ1K1 b - - 1 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1965
Best move: Qf5