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    wow such an amazing equation to make 3x3 box in the set3Array, I think it would be better if you add condition to check if there 0 in the cell

    ( set1Array.size != 9 || set2Array.size != 9 || set3Array.size != 9 ||set1Array.has(0) ||set2Array.has(0) ||set3Array.has(0))