Coffee-length math
Math puzzle for adults
A 5×5 cage grid is enough thought for a break and short enough to finish. Hard 6×6 is next door.
Wednesday, September 9, 2026 · medium
0:00
No long division
Targets stay small. The difficulty is placement, not arithmetic skill.
Questions
- Is this good after sudoku?
- Yes. Same “unique in the row” habit, different constraint.