Tinkerbit › Sudoku
Sudoku: free daily puzzle
Daily 9×9 Sudoku — logic puzzle that rewards deduction.
About Sudoku
Sudoku is a logic puzzle invented in 1979 by Howard Garns and popularized in Japan under the name Sūdoku — "single number". You fill a 9×9 grid so that every row, column, and 3×3 box contains the digits 1 through 9 exactly once.
Tips
- Start by pencilling candidates for almost-full rows and columns.
- Look for "hidden singles" — a cell that has only one valid digit.
- Save advanced techniques like X-wing for harder difficulties.
How to play on Tinkerbit
- Play today’s daily puzzle, the same for everyone, or switch to Infinite for unlimited puzzles at Easy, Medium or Hard.
- Missed a day? The archive has every past daily puzzle.
- Tap the ? next to the title for the full rules and controls.
- Your time, streak and best score are saved, and you can share your result.
Kind of game: Logic, Numbers.
More games like Sudoku
- 2048: Slide and merge tiles to reach 2048.
- Queens: One queen per row, column, and colored region — no adjacencies.
- Tango: Balance suns and moons on a 6×6 grid. Row/column rules + edge constraints.
- Nonogram: Fill cells to match the number clues along each row and column.
- Kakuro: Cross-sums with digits 1–9; runs add up to each clue.
- Minesweeper: Clear the grid without setting off the mines.