Find the rule that is correct on the left side, but not on the right side. If you don't know about bongard problems you can click here.
1 Answer
Wild guess:
If we imagine virtual liquid pouring from the top of each square for an interval, all those squares on the left will hold liquid, but those on the right will not.
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$\begingroup$ Thank you for the warm welcome! Glad to have found it :) $\endgroup$ Aug 14, 2018 at 4:15