&gt; If the move&#x27;s objectively good, there would be no variation in moves between players.<p>This is the essence of chess openings. A choreographed set of moves that is &quot;good for both parts&quot;<p>And of course there&#x27;s a fundamental imbalance between white and black, so you can&#x27;t have both sides making the same move<p>But from a point on, there&#x27;s no fundamental answer on what a good move is, barring analyzing the tree to a great depth.