This is a small puzzle that I made in Bambu Studio. It's based off of the mathematical/geometrical concept of “squared squares,” which is a large square made up of smaller squares with integer side length, with the rule being that no two squares can have the same side length.

I made this so that the side length of the squares was accurate to their length in mm, however the smallest squares may be difficult to print, so I'd recommend scaling this puzzle up slightly if you're having trouble printing/using the tiny ones. The tray also has a little bit of wiggle room, so that the pieces can be dropped in / picked up easily.

More info about Squared Squares: [https://www.squaring.net/sq/ss/ss.html](https://www.squaring.net/sq/ss/ss.html)