Chess puzzle (Advantage)
Moves: 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. g3 d6 6. Bg2 a5 7. O-O c6 8. Bg5 h6
9. Bf4 Re8 10. d5 e5 11. dxe6 Bxe6 12. Bxd6 Bxc4 13. Ne5 Be6 14. Bc5 Nbd7 15.
Nxd7 Qxd7 16. Qc2 Qc7 17. Rad1 Rad8 18. Rxd8 Rxd8 19. Na4 Qe5 20. Bb6 Rd7 21.
Nc5 Re7 22. Nd3 Qb5 23. Bc5 Rd7 24. a4 Qb3 25. Qxb3 Bxb3 26. Bh3 Rd5 27. Ba3
Ne4 28. Bg2 Rd4 29. Bxe4 Rxe4 30. Nc5 Rxe2 31. Nxb3 Bxb2 32. Bxb2 Rxb2 33. Nc5
b6 34. Nd7 b5 35. Rc1 bxa4 36. Rxc6 *
Position (FEN): 6k1/3N1p2/2R3pp/p7/p7/6P1/1r3P1P/6K1 b - - 0 36
Black to move.
Themes:  Endgame  
Puzzle rating: 1644
Best move: a3