Crate chasolver 

A chess helpmate solver and unwinnability detector.

Given a position and an intended winner, determines whether a helpmate is achievable (a sequence of legal moves ending in checkmate by the intended winner) or proves that none exists.

Note that in a helpmate both players cooperate toward that goal: the intended winner delivers checkmate, but not necessarily by force.

See the README for the background motivating this crate, and for usage examples.

Enums

Winnability

Result of a winnability analysis for the intended winner.

Functions

is_unwinnable_fast

Fast but incomplete check for unwinnability; cheaper than winnability when a mating line isn’t needed.

winnability

Full helpmate search for intended_winner.