Achievement: Solve a 1d problem
Solve a 1d problem
250 XP
Solve a 1d problem.
946 users completed this achievement.
Completed by Monstr, Jeanu, Kyrgyzstan, ozasa,
Alex Weavers, 
Андрей Котов, 
Ackerman, MonkeyD, Buha, Nazilya and more.
