Achievement: Solve a 1d problem
Solve a 1d problem
250 XP
Solve a 1d problem.
1166 users completed this achievement.
Completed by
fo76, Neel, 
shiyon, joe_chicken, 
Слава Кушнир, atakanb, 
Duong H. Le, Tongta, Babyshamble, bigpaw and more.
