A toy chess playing program using minimax with bitmaps, alpha-beta pruning and transpositions detection.
It has a text interface, supports self-play, and playing versus a human player via text or the UCI protocol.
For playing via UCI I recommend Shredder as graphical interface.
For regression testing, playing against other versions of itself, a separate tool called two-uci is available:
./two-uci "./prawn-test" "./prawn-baseline"In terms of strength it is about 1900 Lichess ELO with the default settings.