--- title: "Daily Sudoku, October 21, 2026 | Sudoku Flow" description: "The Sudoku puzzles for October 21, 2026 in four levels, Easy to Expert: play online with notes and hints, or print them with the answers." url: https://sudokuflow.com/daily/2026-10-21/ language: en --- [Daily Sudoku](https://sudokuflow.com/daily/) # Daily Sudoku for October 21, 2026 A new set of puzzles every day. [Today's puzzles →](https://sudokuflow.com/daily/) ## October 21, 2026 Daily Sudoku grid: ```text . . . | 5 1 . | 7 . . . . 1 | 8 7 6 | 4 3 . 7 8 6 | 4 2 . | . 9 1 ------+-------+------ 3 2 5 | 7 8 . | . 6 9 . 6 4 | 1 . . | . 7 8 1 7 . | . 9 2 | . . 5 ------+-------+------ 2 4 . | 9 5 . | 6 1 . 8 . 7 | 3 6 . | . . 4 . 1 . | 2 4 7 | 8 5 3 ```
What does this puzzle need?
## How to play 1. Tap a square, then a number. Every row, column and 3×3 box must hold 1 to 9 once. 2. Turn on Notes to pencil in candidates. Placing a number clears it from the notes in its row, column and box. 3. Hint shows a square you can fill now and why. If one of your numbers is wrong, it points to that first. Keyboard: numbers fill a square, N switches notes, arrows move, Backspace erases, Ctrl+Z undoes. Your progress and time are saved on this device. The puzzles come from our app, where a level is set by the hardest technique our solver used on a puzzle. [What each Sudoku difficulty level asks of you →](https://sudokuflow.com/data/sudoku-difficulty-levels/) - [All days](https://sudokuflow.com/daily/archive/) - [Printable Sudoku](https://sudokuflow.com/printables/sudoku/) - [Sudoku checker](https://sudokuflow.com/tools/sudoku-checker/) - More puzzles by level: [Easy](https://sudokuflow.com/play/easy/) · [Medium](https://sudokuflow.com/play/medium/) · [Hard](https://sudokuflow.com/play/hard/) · [Expert](https://sudokuflow.com/play/expert/) · [Master](https://sudokuflow.com/play/master/) · [Extreme](https://sudokuflow.com/play/extreme/) ![Sudoku app icon](https://sudokuflow.com/assets/app-icon.png) ## Want more boards like this? We also make a Sudoku app for iPhone, iPad, Mac and Android. There are no ads in it at all, it works offline, and when you ask for a hint it shows you the technique instead of just filling in a number. [App Store iPhone, iPad, Mac](https://apps.apple.com/app/apple-store/id6502922368?pt=125379530&ct=sudokuflow_web&mt=8) [Google Play Android](https://play.google.com/store/apps/details?id=com.rubigogames.sudoku&referrer=utm_source%3Dsudokuflow%26utm_medium%3Dweb%26utm_campaign%3Dsite) Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.