Undermining
Undermining (removing the support) targets the piece that supports a key defender. If piece A defends piece B, capturing or chasing piece A leaves piece B undefended. This breaks the defensive chain and wins material.
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Undermining (removing the support) targets the piece that supports a key defender. If piece A defends piece B, capturing or chasing piece A leaves piece B undefended. This breaks the defensive chain and wins material.