Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Vienna_Variation
Moves: 1. d4 e6 2. c4 d5 3. Nc3 dxc4 4. e3 Nf6 5. Nf3 a6 6. Bxc4 Bb4 7. O-O O-O 8. Qc2
b5 9. Bd3 Bb7 10. Ne5 Bxc3 11. Qxc3 Qd5 12. f3 Nbd7 13. e4 Qd6 14. Nxf7 Rxf7
15. e5 Qd5 16. exf6 Nxf6 17. Be4 *
Position (FEN): r5k1/1bp2rpp/p3pn2/1p1q4/3PB3/2Q2P2/PP4PP/R1B2RK1 b - - 1 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 998
Best move: Nxe4