New puzzle design Dutch puzzle maker Oskar van Deventer. The Nutcase has two meanings in this puzzle:
1. The case surrounding the nut.
2. The way you feel when you try to solve the puzzle.
There are also two goals:
1. Remove the small nut by disassembling the cast nutcase.
2. Cast puzzle enthusiasts (nutcases) can enjoy trying to change the wording on the bolt from 'nut-case' to 'case-nut'.
The key word is "Interlocking".
This puzzle comes in a limited edition box. The box is written in Japanese & English. The description and other items in the box are written in Japanese.