Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Chigorin_Variation
Moves: 1. Nf3 d5 2. d4 Nc6 3. c4 dxc4 4. e4 b5 5. Nc3 a6 6. d5 Nb4 7. Be2 c6 8. O-O
Nf6 9. Ne5 cxd5 10. Nxd5 Nbxd5 11. exd5 Bb7 12. Bf3 g6 13. Bg5 Bg7 *
Position (FEN): r2qk2r/1b2ppbp/p4np1/1p1PN1B1/2p5/5B2/PP3PPP/R2Q1RK1 w kq - 2 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1317
Best move: d6