Farmer's hat

Farmer’s hat is a named formation of stones whose overall configuration resembles a farmer’s hat. The term refers to the arrangement and connectivity of the stones as a shape; it is not a rule and does not denote a single move.

Players use the name for shape recognition and when discussing the formation’s efficiency, stability, and tactical potential. Unlike a move term such as a hane or an attachment, Farmer’s hat names the resulting stone configuration. The name alone does not show whether the shape is good or bad: its value depends on the surrounding stones, available liberties, and the local tactical situation.