Let’s keep things simple – this is basic math. Nothing scary. Just everyday calculations, a bit of geometry, some number patterns, and the kind of stuff you definitely learned in school at some point.

We take on a challenging vending machine puzzle, breaking down the strategy and clever mechanics behind its creative solution. Lisa Phillips was in her twenties when she went to Jeffrey Epstein’s ...

One idle evening last October, Mehtaab Sawhney took up an old pastime. He began perusing the website erdosproblems.com, an updated record of the 1,179 conjectures left behind by the eccentric and ...

The Trump administration may not detain thousands of immigrants in Minnesota who were admitted into the country but have not yet received "lawful permanent resident (LPR) status," a federal judge ...

Welcome! This package contains all the practice materials, sample data, and instructions for 22 exercises + 3 capstone projects designed to teach you problem-solving with Claude Code and Cowork.