Reference
Your data
Everything this site remembers — your times, which cases you have marked known, which lessons you have finished — is stored in this browser and nowhere else. That means no account and no tracking. It also means clearing your history takes it with it, so here is how to keep a copy.
What is stored right now
- Solves
- 0
- Cases practised
- 0
- Lessons finished
- 0
- Days active
- 0
No solves recorded yet.
Take a copy
One JSON file with everything in it. Readable, if you are curious what a year of practice looks like as text.
Load a copy back
This replaces what is in this browser rather than merging with it. If you have practised on this device since the export, take a copy of that first.
Start again
Deletes every time, every case you have marked known, and every lesson you have ticked off. There is no undo and no copy on a server, because there is no server.
What is not stored
Your appearance and skill settings live under a separate key and are not in the export — they are preferences for a device rather than a record of anything. The current puzzle is one of them, which is why a fresh browser starts on the 3×3.