This game is provided free of charge. How you use it, and what you make of it, is your own responsibility.
When your record can disappear
- It is stored in the browser only. Clear your site data, close a private window, or open the site on another device or browser, and the puzzle you were solving is not there.
- Private browsing may block storage entirely. The game still works, but nothing survives closing the tab.
- We keep no copy, so we cannot restore anything.
About the hints
- Hints use thirteen techniques and nothing else. Every puzzle is checked when it is built to be finishable with those thirteen, so following the hints reaches the last cell at any level.
- Every puzzle is built to have exactly one answer. If you ever find one that does not, please tell us.
Advertising
This site shows ads. We do not choose what they say, and we are not responsible for dealings with third parties you reach through them.
Governing law
These terms are governed by the laws of the Republic of Korea.