Given a camera focused on the players, given commentators on set, given known histories of the players, their recent successes and failures, their past encounters against each other, given stakes, given a ticking timer and the psychological effect of time trouble, the psychological effect of a tricky move, the psychological effect of exhaustion after a six hour game, given knowledge of the players' different playing styles and my preferences... I can tell the difference between human chess and computer chess.

My enjoyment of chess is not simply a scalar function of chess moves.