pChess - Free Chess Game - Version 2.0 PChess is a free chess game which operates in 3D and has excellent artificial intelligence making for an exciting single or multiplayer experience. PChess was created to be an innovative and free chess game. It was also created to be a fun challenge with the integrated AI. Chess is an old and strategic type game that is played with two players and is excellent in practicing mental power and strategic thinking. Its also a free chess game.