You yourself said it. Corruption is born from game theory: if one side can move the pieces at will at any time, as many times as he wants, and you can move yours as long as said side gets to dictate what piece, when, where, and how many times... and said side can not make any wrong moves, and all of his moves are victories, and has full authority to judge if a move of yours is wrong, and what's the punishment... the outcome is pretty obvious...