As allot of forum members use maths when coding, maybe someone on the forum can solve this maths problem and become famous.
A magic square 4x4 means all the numbers in a column or row in the 4x4 grid add up to the same value.
As you see in the pics here, a 4x4 grid where each number is (squared) in the grid shows all the values in columns/rows add up to the same amount.
From what I read no one in the world has figured out how to make a 3x3 grid of squared numbers that have all values in the columns and rows add up to the same amount.
This sounds easy and hard to do.
If someone codes a 3x3 grid and has arrows to tap to increase/decrease the number value in a square in the grid, this might find the solution to this problem quickly.
If I have time I might try and code the 3x3 grid I mentioned.