I ran across an Eye Shape in a game I had last night that forced me to not only spend half an hour after the game looking at it, but also ask somebody about it's life/death determination.

I put up a page that included the eye shape, and, with some help, the sequence that forces seki.

see pillboxThePlayer/EyeSpacesQuestions

Is there a page that lists this sort of thing? Eye shapes with the capacity to force seki in an otherwise living group?