Humans can physically manipulate circles into squares or polygons.
I'm saying omnipotence has to be limited, because it cannot include logical contradictions. God cannot make square circles, God cannot make 2 plus 2 equal five in base 10 digits, God cannot create a rock that is too heavy for him to lift, God cannot give free will but then take away the ability to choose sin.
That depends. I assume God could always do it.
How, or on what, is excluding logical contradictions a "limit"?