# Moser's worm problem

> Unsolved geometry problem about planar regions

**Wikidata**: [Q15904307](https://www.wikidata.org/wiki/Q15904307)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Moser's_worm_problem)  
**Source**: https://4ort.xyz/entity/moser-s-worm-problem