Connect4 is a four-in-a-row videogame. Its novelty is the possibility to exploit the power of Fairy Stockfish for the moves computed by the program. Fairy Stockfish is a multi purpose engine derived from the famous Stockfish, engine written for chess. Features: - Fairy Stockfish support - Take back move - Suggest move Connect4 is released as freeware and can be distributed in every non-commercial form.