There are two goals to the Cast Nutcase created by the Dutch puzzle inventor, Oskar: 

1. Remove the small nut by disassembling the Cast Nutcase. 

2. Cast puzzle enthusiasts (nutcase) can enjoy trying to change the wording on the bolt from ‘nut-case’ to case-nut’.

The key theme is “Interlocking”.

Grand Master Difficulty Level

For ages 8 - 100