Sounds like gwern.net https://hn.algolia.com/?dateRange=pastYear&page=0&prefix=fal...

Not much to go on here... do you recall anything at all about the content or subject matter?

Check out this list:

https://refactoringenglish.com/tools/hn-popularity/

Perhaps the blog that you're looking for is among the most frequently posted blogs on HN.

Anything else you can remember about the design or subject matter? In which programming language were the code snippets?

What was the content about? You describe my blog, and another guy who built the exact same blog to a point it felt uncanny.