5ud0ku
Save behavior varies by game. Check the notes below.
Player notes
About this game
Choose a square and enter a digit from 1 to 9. Every row, column and 3×3 box needs each digit once. Use Pencil for candidates and Check to spot any duplicate digits you entered.
Ivonne Engemann and Marcus Wagner’s 5ud0ku 1.8 created puzzles on the phone itself. This port preserves its generator and solver. It also lets you type in an outside puzzle. Ordinary play is saved on this device.
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Quick tips
Use pencil marks to keep track of candidates before committing to a digit.
If you want several puzzles saved, open Menu → Save game and name each one.
- Arrow keys / 1–9
- Move the selection and enter a number.
- P / Delete
- Toggle pencil marks or clear the selected square.
- Ctrl or Cmd + Z / Y
- Undo or redo a move.
- Pointer / touch
- Select a square, then tap a number in the on-screen pad.
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Report a gameplay or information problem. Short reports are enough.
Archive notes
Rights and Source Notes
Browser play is available for this entry. Official project references are listed below.
- Distribution
- GPL-3.0-or-later
- Browser player
- JavaScript · Browser play
- Added to archive
- 2026-11-14
- Official references
- Source code
- Download open-source code packageSource code only; this is not a game ROM download.
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