You have to run, put your ear on the stool, then run back. That's the gist of this game.
You got the gist, but now there's the matter of this big chute (しゅ). No one told you how to use it, and you've got the gist of how chutes work, but what does it have to do with this running, ear-touching, stool game?!
Currently there are no similar looking kanji which exist in the WaniKani learning system