Puzzle of the week · #13

The Missing Thousand

Three friends, one hotel bill, and a thousand som that is not there.

🔢 Numbers ★★★☆☆ +16 points answer revealed in 5 days

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How the Arena works A puzzle opens, and you send in your answer — but nobody is told whether they were right. On the reveal day the solution appears for everyone at once, together with the list of solvers. Answering while the puzzle is still sealed is worth full points; solving an old one from the archive is worth half.

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Three Doors

A car, two goats, and the most argued-about question in probability.

🎲 Chance ★★★★☆ +22 5 days left

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The Dark Room Drawer

Thirty socks, three colours, no light. Guarantee a black pair.

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