Sudoku

Sudoku

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Sudoku

Tap start to pick a difficulty

Time 0:00
Mistakes 0/10

Scroll below for how to play and FAQs.

About this game

Sudoku

Sudoku is the classic logic puzzle: fill a 9x9 grid so every row, column, and 3x3 box holds digits 1 through 9 exactly once. Four difficulty levels are available, one of which is a personal attack disguised as a puzzle.

Several major Sudoku sites run heavy ad networks alongside the puzzles, something their own privacy policies openly disclose. This version stays ad-free with no login required, a genuine differentiator already proven viable by at least one other successful competitor taking the same approach.

How to play

  1. Pick a difficulty level: easy, medium, hard, or the personal attack tier.
  2. Fill empty cells with digits 1 through 9.
  3. Make sure no digit repeats in any row, column, or 3x3 box.
  4. Complete the entire grid to win.

Tips and strategy

  • Start with rows, columns, and boxes that already have the most filled cells, fewer blanks means fewer possibilities to consider.
  • Use elimination: if a digit already appears in a row or box, it can't go in any other empty cell in that same row or box.
  • Take a short break if you're stuck rather than guessing randomly, sudoku almost always has a logical path forward without needing to guess.

What you get

  • Classic 9x9 grid with four difficulty levels
  • No ads, no login required
  • Clean interface without third-party ad clutter
  • Unlimited puzzles, play as many rounds as you want

I Am Bored publishes free browser games and boredom busters at iambored.blog. This page is part of our Have Fun collection. Interactive web toys you can play instantly on your phone, tablet, or computer.

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FAQ

Questions about Sudoku

Quick answers about how Sudoku works on iambored.blog. Free to play in your browser with no account required.

01Is this game free?

Yes, completely free with no account or download required.

02Are there ads?

No, this version runs ad-free, unlike several major Sudoku sites that disclose extensive third-party ad networks in their own privacy policies.

03Do I need an account?

No, no login or signup is required to play any difficulty level.

04How many difficulty levels are there?

Four levels are available, ranging from easy to a genuinely tough top tier.

05Does every puzzle have a logical solution?

Yes, sudoku puzzles are designed to be solvable through logic alone, without needing to guess, at every difficulty level.

06Does it work on mobile?

Yes, tapping to select cells and enter numbers works the same as clicking on desktop.

07Is my progress saved if I leave the page?

Progress is stored for the current browser session, it will not persist if you clear browsing data or switch devices.

08Can I get a new puzzle if I don't like the current one?

Yes, a new puzzle can be generated at any time within your chosen difficulty level.

09Is Sudoku good for improving focus?

Many players use Sudoku as a concentration exercise, since solving it requires sustained logical attention rather than luck or reflexes.