From the article:
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What if I told you SQL could play chess?
Not "store chess moves in a database." Not "track game state in a table." Actually render a chess board. With pieces. That you can move around. In your browser. Using nothing but SELECT, UPDATE, and a bit of creative thinking.
No JavaScript. No frameworks. Just SQL.
Chess in Pure SQL - DB Pro Blog
What if I told you SQL could play chess? No JavaScript, no frameworks - just pure SQL rendering a full chess board in your browser.