Puzzle Metal Cast Nut Case

Note: Puzzle Master’s level rating system is different than Hanayama’s. Hanayama’s level 1 is equivalent to our level 5…. level 6 is equivalent to Puzzle Master’s level 10.
There are two goals to the Cast Nutcase created by the Dutch puzzle inventor
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.