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, 6th of February.
You may notice some problems are missing... I'm still migrating articles from my old blog.
A waiter at a restaurant gets a group's order completely wrong. Can you turn the table to get two or more orders right?
A bunch of ants are left inside a very, very, tight tube, and they keep colliding with each other and turning around. How long will it take them to escape?