Chess King Video software Tutorial #1 by Steve Lopez. Description of the affordable ($49 with coupon) and powerful chess software Chess King with Houdini 2. With Chess King you can play chess, solve puzzles, analyze your games with the strongest engine available and have access to more than the 5 million game GigaKing database. At the moment there is a Coupon Code INTROKING50 that will let you save $50 from the list $99 price of Chess King!