About TumeKyouen
Kyouen (共円) is a geometric concept describing four or more points that all lie on a single circle. "Tsume Kyouen" is a puzzle game where you find the combination of stones that satisfies this condition. Select four stones
Kyouen (共円) is a geometric concept describing four or more points that all lie on a single circle.
"Tsume Kyouen" is a puzzle game where you find the combination of stones that satisfies this condition.
Select four stones from those placed on the board and find the "kyouen" — the arrangement where all four lie on a common circle. The rules are straightforward, but as the board grows more complex, spatial reasoning becomes essential.
Features
- A mathematical puzzle grounded in geometry
- Over 10,000 stages with varied challenges
- A clean design that keeps the focus on the puzzle
- Save and sync your progress with account sign-in
Great for fans of mathematics, geometry, or logic-based puzzles.
Previous Versions
Here you can find the changelog of TumeKyouen since it was posted on our website on 2013-08-22 11:09:34.
The latest version is and it was updated on 2026-06-11 10:56:48. See below the changes in each version.
TumeKyouen version
Updated At: 2026-05-26
Changes: Added a hint feature.
You can now get hints for difficult stages by watching an ad.
TumeKyouen version
Updated At: 2026-05-16
Changes: Fixed an issue with the kyouen detection logic. Correct stone selections that were not being recognized as valid solutions will now work as expected.
TumeKyouen version 0.12.0
Updated At: 2019-02-09
Changes: New feature: create kyouen
TumeKyouen version 0.10.1
Updated At: 2016-07-03
Changes: UPDATE libraries version.
TumeKyouen version 0.9.3
Updated At: 2013-06-12
Changes: Several fixes and updates
Disclaimer
External Download
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