Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. e3 Nc6 4. dxe5 Nxe5 5. cxd5 Bb4+ 6. Bd2 Qd6 7. Nc3 Bd7 8.
a3 Ba5 9. b4 Bb6 10. Nf3 Nf6 11. h3 a5 12. b5 Bc5 13. a4 Bb4 14. g4 O-O-O 15.
g5 *
Position (FEN): 2kr3r/1ppb1ppp/3q1n2/pP1Pn1P1/Pb6/2N1PN1P/3B1P2/R2QKB1R b KQ - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 2310
Best move: Nxd5