4/27/2026 – "I was intrigued to see the list of the youngest players to reach the top ten," said chess statistician Jeff Sonas. "As the article states, my monthly Chessmetrics historical ratings are indeed unofficial, but being able to look further back, more than a century before FIDE Elo ratings started, certainly does help to place the modern FIDE-rated players into a historical context for comparisons like this." Here is Jeff's historical data.

4/19/2020 – Want to know an expert statistical opinion about which FIDE-strength players you should avoid facing? The Elo system is supposed to be fair toward players of all strengths, but Jeff Sonas sees major problems with the current state of the FIDE Elo rating pool, and it's getting worse each year. It will take multiple articles to walk you through the analysis, but here is chapter one of the story.