I've learned from this and similar solutions of the use of shiftdim with a negative number. This may well be handy for future programming. Thanks for showing us this feature.
Back to basics 11 - Max Integer
Find the largest value in the 3D matrix
Create a vector whose elements depend on the previous element
Count up then down
Read a Soroban Abacus
Give the Shortest Path Through The Maze
Recurring Cycle Length (Inspired by Project Euler Problem 26)
First N Perfect Squares
Lychrel Number Test (Inspired by Project Euler Problem 55)
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