noun
cutting point
In Go, a point where a player's stones can be cut into two groups by the opponent. A fundamental tactical concept.
この断点を守らないと、石が分断されてしまう。
If you don't protect this cutting point, your stones will be split apart.
初心者は断点に気づかずに打ってしまうことが多い。
Beginners often play without noticing cutting points.