Chess puzzle (Crushing)
Moves: 1. d4 c5 2. dxc5 e5 3. Nc3 Bxc5 4. Ne4 Qb6 5. Nxc5 Qxc5 6. e4 Nf6 7. Bd3 Nc6 8.
Nf3 d5 9. exd5 Qxd5 10. Be2 Qxd1+ 11. Bxd1 O-O 12. O-O e4 13. Nd2 Bf5 14. h3
Rad8 15. Nc4 b5 16. Ne3 Bg6 17. c3 Rd7 18. Be2 a6 19. Rd1 Rxd1+ 20. Nxd1 Ne5
21. Bg5 Nh5 22. Ne3 f6 23. Bh4 Nf4 24. Kf1 Nxe2 25. Kxe2 Nd3 26. b3 Rd8 27. f3
exf3+ 28. gxf3 Ne5 29. Rd1 Rxd1 30. Nxd1 Bf7 31. Bg3 Bd5 32. Bxe5 fxe5 33. Ne3
Bb7 34. Ng4 e4 35. Ne5 exf3+ 36. Nxf3 Bxf3+ 37. Kxf3 Kf7 38. c4 Ke6 39. cxb5
axb5 40. Ke4 *
Position (FEN): 8/6pp/4k3/1p6/4K3/1P5P/P7/8 b - - 1 40
Black to move.
Themes: Defensive Move Endgame, Pawn Endgame  
Puzzle rating: 2178
Best move: b4