Achievement: Solve 10 5d problems

Solve 10 5d problems

1700 XP

Solve 10 5d problems.

Recently completed by

x0000 3d, Tal Michaeli 4d, Daviid 6d, JohnSmithGo 2d, dejawu 5d, whsrty 7d, Gonuzul 3d, EdIV 3d, adeodatus 1d, Trianguli 4d

and 67 others.