Chess puzzle (Advantage)
Moves: 1. d4 Nc6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. Bd2 Bxc3 6. Bxc3 Nf6 7. e3 Bd7 8.
Bd3 Qe7 9. O-O O-O-O 10. Qc2 Kb8 11. Rab1 h5 12. b4 Ka8 13. b5 Nb8 14. a4 Rdg8
15. Ne5 g5 16. Bb4 Qe8 17. Ba5 g4 18. Bxc7 h4 19. cxd5 Nxd5 20. a5 g3 21. h3 f6
22. Ng6 Rh6 23. Nf4 gxf2+ 24. Rxf2 Nxe3 25. Qe2 Nd5 26. Nxd5 exd5 27. Qd2 Qh5
28. Re2 Bxh3 29. Kh2 Bd7 30. b6 a6 31. Bxa6 *
Position (FEN): kn4r1/1pBb4/BP3p1r/P2p3q/3P3p/8/3QR1PK/1R6 b - - 0 31
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1775
Best move: Nxa6