- Level 5 - Easy
- Level 6 - Tricky
- Level 7 - Challenging
- Level 8 - Demanding
- Level 9 - Gruelling
- Level 10 - Mind Boggling
|Object||take apart and put back together|
|Difficulty||Level 9 - Gruelling|
|Types||European Wood Puzzles, Hirokazu Iwasawa|
Designer: Hirokazu Iwasawa
Nine sets of balls, which are joined together, need to be packed into the box so that the lid can be completely closed.
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