CodeDoku
codedoku.appCodeDoku is a free daily browser puzzle. Deduce which item belongs in each cell of a 3×3 grid using intersecting row and column hints. One shared puzzle per day for all players, new theme every day, ~3 minutes, no account needed. Also play extra practice boards anytime.
CodeDoku
Logic & Math
How to play CodeDoku
Fill a three-by-three grid using intersecting row and column clues.
- Deduce each cell from where its two hints cross
- You have lives, so a wrong placement costs something
- Everyone plays the same board each day, and practice puzzles are there any time
- Current and best streak are both tracked
The facts
- Runs on
- codedoku.app
- Category
- Logic & Math
- Languages
- English, Spanish, PT
- How often
- A new puzzle every day
- On BoreGame since
- June 2026
- Last updated
- September 19, 2026
- Price
- Free, no signup
Questions about CodeDoku
How do you play CodeDoku?
Fill a three-by-three grid using intersecting row and column clues. Deduce each cell from where its two hints cross You have lives, so a wrong placement costs something Everyone plays the same board each day, and practice puzzles are there any time Current and best streak are both tracked
Where can I play CodeDoku?
On codedoku.app. You can also start it from this BoreGame listing.
How it compares
If you play CodeDoku, the closest things to it in the catalogue are Fermi Unlimited, RNGdle and Shikaku of the day. They sit in the same logic & math category. See the full list of alternatives.
