I've tidied up the @dudeney_puzzles bot: when a puzzle stretches across multiple toots, everything after the first is unlisted, so it doesn't spam the local timeline. And solutions are tooted in reply to the statement, so they're easier to find.
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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\] for display mode.