We must also consider the Offside Rule, which actually prohibits the playing of Morning Crescent on the opening move (assuming no active Bakerloo Redress). I assume the authors are aware of this and, for the sake of simplicity, are actually referring to what is effectively the second move or "first contested move" and not the actual first move. The 1993 Cricklewood Classic saw one match with three of the four players found offside due to a misunderstanding contested moves and right-of-way, which I found amusing (and all too relatable).