6×6 Sudoku: play free online
Free online sudoku on a quick 6 × 6 grid: a new puzzle every game, and a leaderboard to compare your time.
Play SudokuFree, zero ads, no sign-up, on mobile and desktop.
How to play
Fill the 6 × 6 grid: each digit 1–6 once per row, column and box. A mistake costs 3 s.
Tips to get better
- On the 6 × 6 grid, boxes are 2 rows by 3 columns: spot them before you start.
- A digit with only one place left in a box, row or column goes in straight away.
- Small grids fall quickly to elimination: for each empty cell, rule out the digits already around it.
What this game trains
- Logical reasoning: deduce the solution from the rules, without guessing.
- Working memory: keep a few items in mind and recall them.
Levels
Easy · Hard · Expert · Hardcore — each level has its own leaderboard.
Challenge your friends
At the end of a game, send your score as a link: your friend plays exactly the same puzzle and you compare your times. There is also a daily challenge and tournaments.