Riz

Sudoku Classic!

Sharp thinking, quiet focus, one puzzle at a time

Play free on Microsoft Store
4.4 from 13K ratings Free
  • Card & board, Puzzle & trivia
  • Windows PC & tablet
  • On the Store since 2017
Four difficultiesAuto highlight incorrect valuesAdd notesStuck? Use a hintSudoku Classic! screenshot 5Sudoku Classic! screenshot 6Sudoku Classic! screenshot 7Sudoku Classic! screenshot 8Sudoku Classic! screenshot 9Sudoku Classic! screenshot 10Simple yet elegant

How to Play Sudoku Classic!

You settle in, scan the grid, and feel that satisfying click when the right number slots into place — Sudoku Classic gives you that clean, focused experience whether you have five minutes or an hour. It suits beginners who want a gentle mental stretch and seasoned solvers who want a real challenge.

  1. Choose a difficulty level that matches how much of a workout you want
  2. Tap a cell and enter the number you believe belongs there
  3. Use the notes feature to jot candidate numbers in any cell you are unsure about
  4. Turn on Auto-Check or Highlight Duplicates if you want live feedback while you solve
  5. Tap a hint when you are stuck and let the game nudge you in the right direction

Controls

Tap any empty cell to select it, then tap a number from the on-screen pad to place it. Tap the notes icon first to switch into note-taking mode for that cell.

Tips & Tricks

  • Start with a beginner puzzle to learn how Auto-Check and note-updating work before turning those aids off for a harder challenge
  • Fill in notes across a full row or column before placing any numbers — the automatic note updates will then do a lot of the narrowing-down work for you
  • Use Highlight Duplicates as a quick sanity check after filling a block, not just when you think something has gone wrong
  • Every puzzle has exactly one solution, so if you reach a contradiction, backtrack rather than guessing — the hint system can show you where the logic broke down

Why people keep coming back

  • Multiple difficulty levels choose from easier brain-exercise grids right up to expert-level workouts
  • Auto-Check mode see mistakes flagged the moment you place a wrong number, or keep it off for a pure challenge
  • Smart notes candidate numbers you jot in a cell update automatically each time a related cell is filled
  • Duplicate highlighting spots repeated numbers across rows, columns and blocks before they derail your solve
  • Built-in hints get a precise nudge on any cell when progress stalls, without giving the whole puzzle away
  • One guaranteed solution every puzzle is crafted so there is a single correct answer, keeping the logic clean and fair

Content & audience

  • Suitable for all ages (ESRB E; PEGI 3; DJCTQ L; USK Everyone; IARC 3; COB-AU G; GRB All; PCBP 0; CSRR G; CCC TE; Microsoft 3).
  • Free game supported by advertising, with optional in-app purchases.
  • Single-player experience: no chat, no messaging and no user-generated content.
  • Playable offline; no account required.

Category: Video Gaming › Puzzle Video Games · Store category: Card & board, Puzzle & trivia

Policies & support

About Sudoku Classic!

Classic Sudoku for beginners and advanced players. Whether you'd like to relax or keep your mind active – pass time in a pleasant way! Get a small stimulating break or clear your head with Sudoku. Take your favorite game with you wherever you go. Playing Sudoku on mobile is as good as with a pencil and paper.

Choose any level you like. Play easier levels to exercise your brain, or try expert levels to give your mind a real workout. Our Sudoku has some features that make the game easier for you: hints and duplicates highlight. You can use them or complete the challenge without help – it's up to you! What's more, in our Sudoku each puzzle has one solution.

Get an amazing Sudoku experience:

· Challenge yourself figuring out your mistakes, or enable Auto-Check to see your mistakes as you go
· Make notes to keep track of possible numbers. Each time you fill in a cell, notes are automatically updated!
· Highlight duplicates to avoid repeating numbers in a row, column and block
· Hints can guide you through the points when you are stuck

Train your brain with Sudoku anywhere, anytime!

Details

Publisher
Riz
Category
Card & board
Released
2017-12-15
Rating
4.4 / 5 · 12,720 ratings
Price
Free

Updated 2026-09-25 · Press kit & assets · Product data (JSON)