Chess puzzle (Advantage)
Opening: Benoni_Defense, Benoni_Defense_Old_Benoni
Moves: 1. d4 c5 2. c4 cxd4 3. Qxd4 Nc6 4. Qh4 e6 5. Qxd8+ Nxd8 6. Nf3 Nf6 7. Nc3 Be7
8. e4 O-O 9. Bd3 d6 10. O-O e5 11. Bg5 Ne6 12. Bh4 Nf4 13. Nd5 *
Position (FEN): r1b2rk1/pp2bppp/3p1n2/3Np3/2P1Pn1B/3B1N2/PP3PPP/R4RK1 b - - 5 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1643
Best move: N6xd5