Cerebellum is built only upon engine evaluations. It is a balanced graph of chess positions with consistant scores of all nodes, which is built from the engine evaluation by a graph algorithm. It can be used for analysing positions and trees of trees of variations. Additionally, it can be used as an opening library for chess engines. Cerebellum with the GUI "Sirius" and additional tools is not yet released.

Brainfish is a Stockfish based engine which contains a reduced Version of Cerebellum that only contains one or two best moves per position without score information. The Cerebellum moves are only used in engine games, not in analysis mode. The library is contained in the programm itself, for demonstrating the unity of the library and the engine.