Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. d4 d5 2. Nf3 e6 3. c4 a6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 dxc4 7. Bxc4 b5 8. Bd3
Bb7 9. h4 h6 10. Bxf6 Bxf6 11. Ne4 Nd7 12. Qc2 Rc8 13. a4 c5 *
Position (FEN): 2rqk2r/1b1n1pp1/p3pb1p/1pp5/P2PN2P/3BPN2/1PQ2PP1/R3K2R w KQk - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1581
Best move: Nd6+