Chess puzzle (Advantage)
Opening: Slav_Defense, Slav_Defense_Quiet_Variation
Moves: 1. d4 d5 2. e3 c6 3. Nf3 Nf6 4. c4 Bg4 5. cxd5 cxd5 6. Be2 Nc6 7. a3 e6 8. Nbd2
a6 9. O-O Bd6 10. b4 b5 11. Bb2 O-O 12. Ne5 Bxe2 13. Qxe2 Bxe5 14. dxe5 Nd7 15.
f4 Rc8 16. Qg4 Qb6 17. Rf3 d4 18. Rg3 g6 19. exd4 *
Position (FEN): 2r2rk1/3n1p1p/pqn1p1p1/1p2P3/1P1P1PQ1/P5R1/1B1N2PP/R5K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1004
Best move: Nxd4