Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Max_Lange_Defense
Moves: 1. e4 e5 2. Nc3 Nc6 3. Bc4 Be7 4. d3 Nf6 5. Nf3 d6 6. Be3 Bg4 7. O-O O-O 8. h3
Bh5 9. a3 a6 10. g4 Nxg4 11. hxg4 Bxg4 12. Nd5 Nd4 13. Bxd4 exd4 14. Nxe7+ Qxe7
15. Kg2 Kh8 16. Rh1 f5 17. Qe1 *
Position (FEN): r4r1k/1pp1q1pp/p2p4/5p2/2BpP1b1/P2P1N2/1PP2PK1/R3Q2R b - - 1 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1636
Best move: fxe4