Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Semi-Tarrasch_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. cxd5 Nxd5 6. Nf3 Nc6 7. a3 Be7 8. Bd3
b6 9. Qc2 f5 10. h3 O-O 11. Bd2 a6 12. g4 b5 13. gxf5 exf5 14. O-O-O c4 15. Be2
b4 *
Position (FEN): r1bq1rk1/4b1pp/p1n5/3n1p2/1ppP4/P1N1PN1P/1PQBBP2/2KR3R w - - 0 16
White to move.
Themes:  Middlegame  
Puzzle rating: 986
Best move: Nxd5