The London System PowerBase 2019 is a database and contains 9105 games of which 113 are annotated. Half of these games have been played in the last four-and-half years. Only games with a minimum rating average of 2350 were selected to ensure that the games are theoretically highly relevant. The player with the most games (187) is Gata Kamsky. But World Champion Magnus Carlsen is also a fan of the London System – he has 45 games in the database. Replaying the games of the greatest devotees of this system will bring a lot of rewards. Also notable are, for example, the games by Nikola Sedlak and Ferenc Berkes.