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belly attachment

An attachment made against the side, or “belly,” of an opposing stone.

Also known as

hara-tsuke

A belly attachment (also called hara-tsuke) is a move played directly against the side of an opposing stone, rather than against its head or top. The played stone contacts that side at an adjacent point, creating an attachment that can press the opponent, probe its shape, or induce a local response.

This tactic is often used to alter the opponent’s shape and may force a specific local exchange. It is distinguished from an ordinary or head attachment by the point of contact: the side, or belly, of the stone. Because the resulting shape and liberties can be delicate, read the continuation carefully. Without a favorable follow-up, the attachment may improve the opponent’s position instead.