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Isn't it obvious? He didn't take and didn't even check the resource nearby (while it was inaccessible), but instead rushed into the darkness, precisely to where he needed to be? In this way, you can justify almost any cheater if you want, including in the situation you mentioned. Take off your rose-tinted glasses, don't be naive (although the overwhelming majority of those who voted understand everything ;) ).
I personally know many players who don't check resources (or open map) because they don't want to waste precious movement points, and does that mean they are all cheaters? :) Strong players ALWAYS try to take other players' objects first and then spend their resources on taking their own. As they say, I can always take my own later!