Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Chigorin_Variation
Moves: 1. d4 d5 2. Nf3 Nc6 3. Bf4 Bf5 4. h3 Nb4 5. Na3 c5 6. c3 Nc6 7. dxc5 e6 8. Be3
Nf6 9. Nd4 Qc7 10. Nxf5 exf5 11. Bd4 O-O-O 12. Qa4 a6 13. b4 Ne4 14. b5 *
Position (FEN): 2kr1b1r/1pq2ppp/p1n5/1PPp1p2/Q2Bn3/N1P4P/P3PPP1/R3KB1R b KQ - 0 14
Black to move.
Themes:  Opening  
Puzzle rating: 1877
Best move: Nxd4