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.
Go Rules
In Go almost any empty point is legal. The two exceptions are suicide and repeating a position. How to recognise them and why they shape eyes and life.
Scoring
Seki is mutual life: two groups that cannot capture each other both stay on the board. How to recognise it, when to aim for it and how it is scored here.
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
Glossary
Why two eyes make a Go group alive, what a false eye is, and the words for eye space, killing points and living shapes, with a simple position to check.