Before revision: In December 2023, 8-year-old Roman Shogdzhiev, from Russia, defeated GM Jakhongir Vakhidov and GM Johan-Sebastian Christiansen in the World Rapid Chess Championship 2023, and after a couple of days defeated GM Kirill Shevchenko, GM Alan Pichot and GM Pranav V in the World Blitz Chess Championship 2023
After revision: In December 2023., 8-year-old Roman Shogdzhiev, from Russia, defeated GM Jakhongir Vakhidov and GM Johan-Sebastian Christiansen in the World Rapid Chess Championship 2023, and after a couple of days defeated GM Kirill Shevchenko, GM Alan Pichot and GM Pranav V in the World Blitz Chess Championship 2023