I. Youngest Grandmasters (GMs) in history
As published by chessbase.com on 07 August 2011 , with Bobby Fischer’s age at 15yrs-6mos-1day as the benchmark, below chart is the compiled list of the 34 players (updated) who held the record for the youngest chess grandmasters (GMs) in history. The age listed (years, mths & days) is the age reckoned on the actual date a player had qualified as a GM (not FIDE’s official rating dates) and the year they gained the title. There are 22 GMs listed at 14-years-old and below and another 12 GMs (No. 23-34) listed at 15 to 15½ years old when they qualified for the title.