Play Magnus Group is a Norwegian chess company co-founded by chess grandmaster Magnus Carlsen in 2013. The company released the mobile app Play Magnus in 2014, before merging with chess24 in 2019 and being acquired by Chess.com in 2022.
History
In October 2013, Magnus Carlsen co-founded the Oslo-based Play Magnus AS, together with his manager Espen Agdestein and entrepreneur Anders Brandt.[1] At its founding, Carlsen owned 60% of the company and Agdestein owned 15%. Investing Carlsen's own money and that of US and Norwegian investors,[2] Play Magnus AS then began developing Play Magnus, a mobile computer chess app. The app released in 2014, and allowed users to play against a chess engine modeled after a database of thousands of positions from recorded games Carlsen played from the age of five and up.[3]