Very bad series. Some of them manage to solve it using google. This one has no stating point.

Wow so hard to figure out. completely illogical. terrible.

Three years later and still can't figure this one out. Any hints from the people who solved it would be great.

Nevermind. Just solved it. To the others who struggled like me, the top one has the circle on the left, the bottom has the circle on the right.

The "circles" are two pixels on top and bottom, then 3 single pixels on each side <..> ish R1 C7-10.