• MinekPo1@lemmy.ml
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    9 months ago

    TL;DR: Grid simplifies to true, if and only if it is a 3x3 magic square.

    full explanation
    • Fifteen is an array of length 15
    • T checks if an array of length A+B+C is equivalent to an array of length 15, thus checking if A+B+C is equal to 15
    • And is simplifies to X if A is true, else it simplifies to false
    • Df checks if A and B are Diffrent , simplifying to X if they are
    • Grid first checks if every row, column and diagonal is equal to 15, then checks if every item is unique.