None may challenge without first completing the 𝓖𝔂𝓶 𝓟𝓾𝔃𝔃𝓵𝓮.
To make an attempt for the :badgepsychic:  Mind Badge, you must send a screenshot as proof of successfully completing a game of Squirdle.
https://squirdle.fireblend.com/

Information on how often you may attempt the puzzle will be in the Omega Region Rules.

Now get those minds to work ⋆｡₊˚⊹