Chess puzzle (Advantage)
Opening: Slav_Defense, Slav_Defense_Alekhine_Variation
Moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 a5 8. Bxc4 e6
9. O-O c5 10. dxc5 Qxd1 11. Rxd1 Bxc5 12. Ne5 Bb7 13. Bb5+ Ke7 14. Kh1 Ne4 15.
Rf1 Rd8 16. Nc4 Nc6 17. f3 Nf6 18. Bd2 Na7 19. Rad1 *
Position (FEN): r2r4/nb2kppp/4pn2/pBb5/PpN5/4PP2/NP1B2PP/3R1R1K b - - 4 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1611
Best move: Nxb5