Richard lifted a finger to answer, but the kid beat him to it. As he spoke, Richard realized that he still didn't know what was in the boxes. He wordlessly grabbed one and began to try to pry it open, ignoring any protests from the others. This was something Blue Moon wanted, and he aimed to find out.

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I guess a Strength check is in order. Unless it's not.
(1d20)[20] with a Strength of 16.