Want a game of chess?

Checkmate 7b+ (benchmark) by Hoseok Lee

A post shared by Koalaclimbing, Lim ChaeYeon (@koalachaeyeon) on Mar 5, 2018 at 5:35am PST

View the problem by clicking here.

Do you want people to try conquer your problem? Post a video of it to Instagram with the #MoonBoardChallenge. We may feature it in the next newsletter.