Blog posts with problems to get your brain going! You get a new problem every fortnight and the solutions are published later.
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The next problem is scheduled for Sunday, 7th of February.
You may notice some problems are missing... I'm still migrating articles from my old blog.
Is it true that every integer you can think of has a multiple written out only with \(0\)s and \(1\)s?
I find the problem in this post rather fun to think about because it is a problem about a game that can actually be played between two players.