Chess grandmaster Magnus Carlsen has kinda sorta retired from the world championship of chess — "I simply feel that I don't have a lot to gain" — but will continue to play chess in other tournaments. https://www.theringer.com/2023/4/25/23696962/magnus-carlsen-world-chess-championship-2023-rating-elo
Magnus Carlsen’s Legacy Is Still Being Written 

The highest-ranked grandmaster of all time has won everything there is to win in professional chess. Now he’s ready to walk away and do something else—sort of.

The Ringer
@kottke It’s like Wayne Gretzky quitting at his peak but he still shows up for Celebrities on Ice