F Fun IQ
New puzzle daily

● Sudoku at Fun IQ

One grid.
Three ways to enjoy it.

Play today's free Sudoku online, print it for later or build a calmer solving method with practical guides.

Play today's Sudoku →Learn without guessing
01 · Play online

Daily Sudoku

Choose easy, medium or hard, check progress and keep your result on this device.

Play today →
02 · Solve on paper

Printable Sudoku

Choose easy, medium or hard and print a clean puzzle with an optional answer sheet.

Print a puzzle →
03 · Learn the method

Sudoku strategy guides

Practise scanning, candidate notes and elimination with clear, practical explanations.

Start learning →

● A simple solving loop

Scan, place, repeat.

Sudoku rewards careful elimination. Work across the full grid before reaching for a guess.

  1. 1Scan a digitChoose one number and check where it can appear across neighbouring boxes.
  2. 2Find a singlePlace a digit only when one cell or one candidate remains.
  3. 3Rescan the gridEvery confirmed digit changes the possibilities around it.

● Improve your technique

Practical Sudoku guides

Scan a Sudoku grid without guessingA repeatable first pass for rows, columns and boxes.Use candidate notes without clutterRecord only the possibilities that help the next decision.Choose your difficultyEasy, medium and hard daily grids in one free game.

Sudoku questions

Is Fun IQ Sudoku free?

Yes. Every difficulty, progress checking and printing are free without an account.

Do I need to guess?

No. Scan for logical placements and use candidates when the next single is not visible.

Where should a beginner start?

Choose easy and practise scanning one digit through all nine boxes before moving to medium.