Chess King 4 with Houdini 4 Chess Software for Mac The leader in affordable and easy-to-use complete chess software Chess King 4 is now available for the Mac Includes 6 million game GigaKing Database, free updates 2014 Classical and random playing modes, hundreds possible levels of play Includes Super-GM engine Houdini 4, supports up to 6 cores and 4 GB of hash Prepare for your opponent, opening and custom trees, 1500 puzzles and 100+ quest games