how do I get rid of the mimic chest I can't get rid of them and always kill me at the end of the day
Weird. It should show up in the bottom left corner of the Game Over Screen.
I’ve played both the browser version and downloaded version, and I’m unable to replicate your issue. This is a head scratcher. Are you playing in a browser (if so, which one?) or downloaded?
In the meantime, wave all three chests over the orange thief to reveal which one has real treasure inside, and open it.