Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bb4 5. d3 Bxc3+ 6. bxc3 d5 7. exd5 Nxd5
8. O-O Nxc3 9. Qe1 Nd5 10. Nxe5 O-O 11. Nxc6 bxc6 12. Qd2 Re8 13. f4 Be6 14. f5
Nb6 15. fxe6 Nxc4 16. dxc4 Rxe6 17. Qf4 f6 18. Qg3 *
Position (FEN): r2q2k1/p1p3pp/2p1rp2/8/2P5/6Q1/P1P3PP/R1B2RK1 b - - 1 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 884
Best move: Qd4+