Life and Death
Why a group with two separate eyes can never be captured, why one eye is not enough, and how to make eyes in the corner, on the edge and in the centre.
Life and Death
A false eye looks like an eye but cannot keep a group alive. How false eyes form, a simple diagonal test to spot them, and how to fix or exploit them.
Life and Death
How the shape of a group's eye space decides whether it can live, with the classic three-point shapes, the idea of the vital point and simple rules for small sp