Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Max_Lange_Defense
Moves: 1. e4 e5 2. Nc3 Nc6 3. d3 Bb4 4. Bd2 Nf6 5. Nf3 d5 6. Be2 d4 7. Nb1 Bc5 8. O-O
O-O 9. a3 a6 10. Bg5 h6 11. Bc1 a5 12. Nbd2 Qe7 13. Nc4 a4 14. Ne1 Be6 15. Nd2
b5 16. f4 exf4 17. Rxf4 Bd6 18. Rf1 Rfe8 19. Ndf3 Nxe4 *
Position (FEN): r3r1k1/2p1qpp1/2nbb2p/1p6/p2pn3/P2P1N2/1PP1B1PP/R1BQNRK1 w - - 0 20
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1103
Best move: dxe4