How to unckeck checkboxes in another div when checkbox in one div is checked

I've 3 div elements namely part1 and part2 and part3

There are multiple checkboxes in each div

If checkboxes in part1 and part2 are checked then part3 should be unchecked. (Not working)

If checkbox in part3 is checked then the other should be unchecked (This is working)

The checkbox in part3 is uncheckable.

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