How about adding a test suite where some of the cell entries are 2-D?
Most of the solutions will not be affected by this update.
Test 7,10 and 11 are fake, you have to correct these problem
In Test 7 : 1->2->4->5->6->40->41->42. So a path exists to go through the structure, even if we don't have a global increase in the cell.
At the beginning this problem was just a test to practice recursive algorithms. I am fed up with always factorial and fibonacci examples. Maybe some others problems will follow.
Remove the air bubbles
Test if a Number is a Palindrome without using any String Operations
Project Euler: Problem 10, Sum of Primes
Make an awesome ramp for a tiny motorcycle stuntman
Negation and new variables
Rank of magic square (for beginners)
BLOCK x3 (Version 3)
Numbers spiral diagonals (Part 2)
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