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Zip answer. #600

Solved zip board for puzzle 600. The complete text solution follows below.

Every move in order

Rows and columns below start at 1, from the top left.

  1. Start at row 6, column 5 (1).
  2. Up to row 5, column 5.
  3. Up to row 4, column 5 (2).
  4. Left to row 4, column 4.
  5. Down to row 5, column 4 (3).
  6. Down to row 6, column 4.
  7. Left to row 6, column 3 (4).
  8. Down to row 7, column 3.
  9. Right to row 7, column 4.
  10. Right to row 7, column 5.
  11. Right to row 7, column 6 (5).
  12. Right to row 7, column 7 (6).
  13. Up to row 6, column 7.
  14. Up to row 5, column 7.
  15. Up to row 4, column 7.
  16. Up to row 3, column 7 (7).
  17. Up to row 2, column 7.
  18. Left to row 2, column 6.
  19. Left to row 2, column 5.
  20. Left to row 2, column 4.
  21. Left to row 2, column 3 (8).
  22. Up to row 1, column 3.
  23. Right to row 1, column 4.
  24. Right to row 1, column 5.
  25. Right to row 1, column 6.
  26. Right to row 1, column 7.
  27. Right to row 1, column 8.
  28. Down to row 2, column 8.
  29. Down to row 3, column 8.
  30. Down to row 4, column 8.
  31. Down to row 5, column 8.
  32. Down to row 6, column 8.
  33. Down to row 7, column 8.
  34. Down to row 8, column 8.
  35. Left to row 8, column 7.
  36. Left to row 8, column 6.
  37. Left to row 8, column 5.
  38. Left to row 8, column 4.
  39. Left to row 8, column 3.
  40. Left to row 8, column 2.
  41. Left to row 8, column 1.
  42. Up to row 7, column 1.
  43. Right to row 7, column 2.
  44. Up to row 6, column 2 (9).
  45. Left to row 6, column 1.
  46. Up to row 5, column 1.
  47. Up to row 4, column 1.
  48. Up to row 3, column 1.
  49. Up to row 2, column 1.
  50. Up to row 1, column 1.
  51. Right to row 1, column 2.
  52. Down to row 2, column 2 (10).
  53. Down to row 3, column 2.
  54. Down to row 4, column 2.
  55. Down to row 5, column 2.
  56. Right to row 5, column 3 (11).
  57. Up to row 4, column 3.
  58. Up to row 3, column 3 (12).
  59. Right to row 3, column 4 (13).
  60. Right to row 3, column 5.
  61. Right to row 3, column 6 (14).
  62. Down to row 4, column 6 (15).
  63. Down to row 5, column 6.
  64. Down to row 6, column 6 (16).

Why it works

Start at checkpoint 1, visit checkpoints 2 through 16 in order, and finish at 16. Move horizontally or vertically, visiting all 64 cells exactly once without crossing a wall.

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