I suppose , that "See attempt paths" function shows only tries of ppl with pro account (As I see there one attempt in my problem, and 150 tries).
I understand, you can't keep individual tries of everyone, but keeping the sum of tries for every move would take only (SizeOfTheNumber * count of all variations on goproblems) + you would have to solve how to save moves out of the tree (fake variations or smth. like that)
Just a suggestion.
{Posted by kovarex}