Vertex

I tried this one this afternoon, it took me forever, have a go

https://www.nytimes.com/puzzles/vertex

I gave it a try, couldn't get the dots to work on the third test with the vertices, so packed it in, seems you were more persistent Lolly, I'm impressed.

I've done  4 now  they aren't easy. You can cancel a move

I understand about the cancel move, but just couldn't put the dot where I wanted it.
At least I gave it a shot, it did my head in !!! LOL.

I've done about 8 of these, found them a challenge, but now they have started charging.
Oh well I'll find something else