Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bc4 Bc5 4. Nxe5 O-O 5. O-O Nc6 6. Nxc6 dxc6 7. d4 Bb6 8.
e5 Nd5 9. Nd2 Bxd4 10. Nf3 Bc5 11. Bg5 Be7 12. Qd2 Be6 13. Rad1 b5 14. Bb3 a5
15. c3 a4 16. Bc2 f6 17. Qd3 g6 18. Bf4 *
Position (FEN): r2q1rk1/2p1b2p/2p1bpp1/1p1nP3/p4B2/2PQ1N2/PPB2PPP/3R1RK1 b - - 1 18
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 880
Best move: Nxf4