Well Sudoku
An easygoing 9×9 sudoku to relax with, from a gentle solve to a proper brain-stretch when you want one.

Controls
Tap or click a cell, then a number; add notes, erase an entry, or undo a move whenever you change your mind.
How to Play
Well Sudoku is made for unwinding. Fill the 9×9 grid so that 1 to 9 sit once in every row, column and 3×3 block, at whatever pace suits your mood, from a calm easy puzzle to a demanding one.
If it is your first time, our step-by-step guide eases you in. After that, the notes, erase and undo tools let you play freely without worrying about a stray number.
Tips & Tricks
- Add notes to a cell when two digits both look possible, then erase the loser later.
- Undo lets you explore a line of reasoning and back out cleanly if it does not hold.
- For a relaxing solve, follow the forced cells and let the grid unwind itself.
Frequently Asked Questions
Is Well Sudoku better for relaxing or for a real challenge?
Either. It spans easy through to expert puzzles, so you can wind down with a gentle grid or test yourself with a hard one.
Can I erase a number I have entered?
Yes. You can erase your own entries, add notes and undo moves, so it is easy to change your mind as you solve.