A stack machine that can play chess implemented in 84,688 python regular expressions.
Here's a game I played against it (I'm white -- it played as well as you'd expect from a 2-ply engine :)
"He was 70 when he appeared on the cover of The Chessmaster 2000, and that same image was used on Chessmaster games for the next 16 years. A professional actor to the very end, Hare passed away in 1997, not in a hospital but on stage, during a rehearsal at Manhattan's famous Actor's Studio"
Jeff Sarwer was the intimidating 8-year-old chess prodigy who drew against Josh Waitzkin to share a US Junior Chess championship title (the basis for the dramatic finale in the film "Searching for Bobby Fischer"). He's a professional poker player now.
Jennifer Shahade also interviewed him for the USCF website a few years ago: http://www.uschess.org/index.php/January/Lost-and-Found-An-Interview-with-Jeff-Sarwer.html
A neat twist on chess tactic puzzles where you have to do a bit more visualization to solve the tactic.
They've also recently added pieceless tactics for even better blindfold practice: https://listudy.org/en/pieceless-tactics/1203
A list of chess masters who didn't get great at chess until they were adults.
A very useful calculator for determining win/draw/loss probabilities for two players given their ratings.
A documentary about scholastic chess in Illinois.
Short guide to analyzing chess games.
An online players account of their first otb tournament.
There’s something hypnotizing about watching a guy known as “the Mozart of chess”—a player who is quantifiably better than Bobby Fischer—taking a big gulp of beer, announcing his position as “completely winning,” then singing along to Dr. Dre saying “motherfuck the police” while coasting into another quick checkmate.
Chess streaming getting some more coverage
Useful Elo calculator.
Magnus's Banter Blitz sessions on chess24 are very good.
computational geometry, chess, running, programming...
Benko's mate in 3 puzzle.
Difficulty of various games for computers.
Some Xiangqi games annotated in English!
And a short intro to shogi for western chess players.