Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. h3 Be7 5. Nc3 Nf6 6. d3 Na5 7. Bb3 Nxb3 8.
axb3 c6 9. O-O O-O 10. Nh2 d5 11. exd5 Nxd5 12. Bd2 Bg5 13. Ne4 Bxd2 14. Qxd2
f5 15. Nc3 Qf6 16. Nxd5 cxd5 17. Qe2 Re8 18. Rae1 e4 19. dxe4 Rxe4 20. Qd2 Be6
21. Rxe4 dxe4 22. c4 Rd8 23. Qc2 Rd3 24. Rd1 Rxd1+ 25. Qxd1 h6 26. Qd2 Kf7 27.
Nf1 f4 28. Qc2 Bf5 29. Qc1 Qg5 30. g3 Bxh3 31. Qxf4+ Qxf4 32. gxf4 Bxf1 33.
Kxf1 Kf6 34. Ke2 Kf5 35. Ke3 h5 36. f3 exf3 37. Kxf3 h4 38. b4 h3 39. Kg3 h2
40. Kxh2 Kxf4 41. c5 *
Position (FEN): 8/pp4p1/8/2P5/1P3k2/8/1P5K/8 b - - 0 41
Black to move.
Themes: Defensive Move Endgame, Pawn Endgame  
Puzzle rating: 2226
Best move: a6