wedge
A tactical move into the gap between opposing stones that can threaten to split their connection.
A wedge is a move played into the gap between two opposing stones or groups, often creating a threat to split them. By occupying this gap, the wedge may threaten a cut and force the opponent to respond to several weaknesses or settle for an inefficient connection.
The aim is to separate opposing groups, disrupt their connection, induce a favorable exchange, or gain tactical profit from the complications that follow. The wedge is the placement into the gap; it may threaten or lead to a cut, but it is not necessarily a completed cut. Its success depends on the surrounding liberties, connections, and accurate tactical reading. A poorly timed wedge can be captured or leave the invading stone without useful follow-up.
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