Jeff Smith's Math Puzzle for February 13, 2026 - ‘Love may make the world go around, but oil lubricates the axle.’ The post Math Puzzle for February 13, 2026 appeared first on Alameda Post.

One string in each of the following pairs can be unraveled into a circle—the so-­called unknot. Which one is it? Show puzzle solution The knots at the top left and the bottom right can be unraveled ...