Chess puzzle (Advantage)
Opening: Tarrasch_Defense, Tarrasch_Defense_Two_Knights_Variation
Moves: 1. c4 e6 2. d4 c5 3. Nf3 d5 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 cxd4 7. Nxd4 Be7 8.
g3 Nc6 9. Bg2 O-O 10. O-O Nxd4 11. Qxd4 Be6 12. Rfd1 a6 13. Nxd5 *
Position (FEN): r2q1rk1/1p2bppp/p3bn2/3N2B1/3Q4/6P1/PP2PPBP/R2R2K1 b - - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1617
Best move: Nxd5