pygambit.gambit.Node.is_strategy_reachable

Node.is_strategy_reachable

Returns whether this node is reachable by any pure strategy profile.

A node is considered reachable if there exists at least one pure strategy profile where the resulting path of play passes through that node.

In games with absent-mindedness, some nodes may be unreachable because any path to them requires conflicting choices at the same information set.