Answer: Maze 338

Here is the way through Maze 338. The orange line shows Pixel’s route from the top-left corner to the ball of yarn.

The solved maze 338 with the route drawn as an orange line.
The one true route through maze 338.

The route as arrow code

Each arrow is a direction and each number is how many squares to move. The whole route is 80 moves long and has 48 turns.

→ 1  ↓ 1  ← 1  ↓ 1  → 2  ↓ 1  → 2  ↓ 1  → 5  ↓ 1  → 1  ↑ 2  ← 1  ↑ 1  ← 1  ↓ 1  ← 2  ↑ 1  → 1  ↑ 1  → 3  ↑ 1  → 1  ↓ 6  ← 1  ↓ 3  → 4  ↓ 1  → 1  ↓ 1  ← 1  ↓ 1  ← 1  ↑ 2  ← 1  ↓ 1  ← 1  ↓ 4  ← 1  ↓ 1  → 3  ↑ 2  ← 1  ↑ 1  → 2  ↓ 2  → 2  ↓ 2  → 1
Show the route step by step
  1. Go right 1 square.
  2. Go down 1 square.
  3. Go left 1 square.
  4. Go down 1 square.
  5. Go right 2 squares.
  6. Go down 1 square.
  7. Go right 2 squares.
  8. Go down 1 square.
  9. Go right 5 squares.
  10. Go down 1 square.
  11. Go right 1 square.
  12. Go up 2 squares.
  13. Go left 1 square.
  14. Go up 1 square.
  15. Go left 1 square.
  16. Go down 1 square.
  17. Go left 2 squares.
  18. Go up 1 square.
  19. Go right 1 square.
  20. Go up 1 square.
  21. Go right 3 squares.
  22. Go up 1 square.
  23. Go right 1 square.
  24. Go down 6 squares.
  25. Go left 1 square.
  26. Go down 3 squares.
  27. Go right 4 squares.
  28. Go down 1 square.
  29. Go right 1 square.
  30. Go down 1 square.
  31. Go left 1 square.
  32. Go down 1 square.
  33. Go left 1 square.
  34. Go up 2 squares.
  35. Go left 1 square.
  36. Go down 1 square.
  37. Go left 1 square.
  38. Go down 4 squares.
  39. Go left 1 square.
  40. Go down 1 square.
  41. Go right 3 squares.
  42. Go up 2 squares.
  43. Go left 1 square.
  44. Go up 1 square.
  45. Go right 2 squares.
  46. Go down 2 squares.
  47. Go right 2 squares.
  48. Go down 2 squares.
  49. Go right 1 square.

Why is there only one way through?

This is a perfect maze. That means there is exactly one path between any two squares, with no loops. It was built by a program that wanders from square to square, knocking down walls as it goes, and backs up whenever it gets stuck. Programmers call that backing-up trick backtracking.

Because there are no loops, the path in the answer is the only way to get from the start to the goal.