All/Some

All/Some is a web app where you solve logic puzzles by working out how sets relate using "all," "some," and "none" relationships. Players match groups of words to correct Euler diagrams. The game was inspired by a viral Instagram puzzle and developed by a husband-and-wife team who create puzzles and handle code and design respectively.

The app offers free daily challenges for players interested in logic, set theory, and visual reasoning puzzles.