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Puzzle
Doodle Doku
Classic sudoku on a pencil grid. Fill every empty square so each row, each column and each 3×3 box has the numbers 1 to 9 exactly once. Every puzzle is new and has exactly one answer, with notes for your pencil guesses and three hints if you get stuck.
- Puzzle
- A new puzzle every game
- Notes and 3 hints per puzzle
- Easy, Medium and Hard
- Saves your best on each level
How to play
- Pick a level. Easy starts with about 40 numbers, Medium about 32, and Hard as few as 25.
- Tap an empty square, then tap a number to write it in.
- Each row, column and 3×3 box needs 1 to 9 with no repeats.
- A wrong number turns orange and counts as a mistake. Mistakes never end the game.
- Fill the whole grid to win. Your best time on each level is saved.
Controls
- Tap a square, then a number. On a keyboard, use the arrow keys and type 1 to 9.
- Notes lets you pencil in small guesses. Erase clears a square.
- Hint fills in the square you picked (or a random one), three times per puzzle.
- The small number under each button shows how many of that number are still to place.
Tips
- Look for a row, column or box that's almost full first.
- Pick a number and scan for where it can go in each box.
- If a square can only take one number, write it in.
- Use notes when two squares in a box share the same two possible numbers.
About Doodle Doku
Doodle Doku is sudoku with a sketchbook look. Every puzzle is made fresh when you start and checked to have exactly one answer.
We count mistakes but never end the game for them, so you can learn a hard grid at your own pace or just play it relaxed.
