Chess puzzle (Advantage)
Moves: 1. d4 e6 2. c4 Nf6 3. Bg5 Be7 4. Nf3 d5 5. cxd5 exd5 6. e3 O-O 7. Be2 b6 8. O-O
Bb7 9. Nc3 h6 10. Bh4 Nbd7 11. Rc1 Rc8 12. Re1 c5 13. Bb5 cxd4 14. exd4 Bb4 15.
a3 Bxc3 16. bxc3 g5 17. Nxg5 hxg5 18. Bxg5 Re8 19. Rxe8+ Qxe8 20. Bxd7 *
Position (FEN): 2r1q1k1/pb1B1p2/1p3n2/3p2B1/3P4/P1P5/5PPP/2RQ2K1 b - - 0 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1361
Best move: Nxd7