Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 Nf6 2. Nf3 d5 3. e3 e6 4. Bd3 Bd6 5. Nbd2 O-O 6. O-O c5 7. c3 cxd4 8.
exd4 Nc6 9. Qc2 b5 10. Bxb5 Ne7 11. Re1 Ng6 12. Nf1 Ng4 13. Bg5 f6 14. Bd2 Qc7
15. Bd3 f5 16. h3 Nf6 17. Ng5 Ne4 18. f3 *
Position (FEN): r1b2rk1/p1q3pp/3bp1n1/3p1pN1/3Pn3/2PB1P1P/PPQB2P1/R3RNK1 b - - 0 18
Black to move.
Themes:  Opening  
Puzzle rating: 1919
Best move: Nxd2