If chess rank is determined by IQ, then why is not every number 1

Why can I beat chess bots but not human players of similar ranking? (600-800) - Quora

Are Chess Players Good at Math? - Chessily

Is the rarity of brilliant moves in chess.com because they rarely exist or is it that I, a mediocre (1400) player rarely find them? Do games between higher rated players have more

World chess champion Magnus Carlsen gives up crown

Why are men ranked higher in chess than women? It has to do with statistics.

Hans Niemann Is the Bad Boy of Chess. But Did He Cheat? - The New York Times

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8 Chess Apps and Websites (2021): Chess.com, Lichess, SocialChess, Shredder Chess

Sure you're not a robot? Solve this chess puzzle and prove it.

If Chess Elo is correlated with IQ, can you improve your IQ by training in chess? - Quora

Distribution of chess skill as measured by Elo rating in FIDE (blue