← Back to glossary

False eye

An apparent eye that cannot reliably keep a group alive because the opponent can eventually play inside it.

A false eye is an apparent eye that is not a true eye, so it cannot reliably support a living group. The surrounding shape has a defect—such as an opposing stone or a cutting point—that can, under suitable conditions, allow the opponent to play on the apparent eye point.

False eyes matter in life-and-death reading. Unlike a true eye, a false eye does not permanently prevent an opponent’s play inside the shape, and a group that seems to have an eye may still be capturable. Do not judge only by whether the point looks enclosed locally: read the surrounding shape and its liberties to determine whether the opponent can occupy it.