Sudoku Challenge
A 9×9 sudoku for players who want a proper test, with room to push from steady solves to tough grids.
Controls
Click a cell to select it, then choose the correct number to place; works with mouse on desktop and touch on mobile.
How to Play
Sudoku Challenge is for those who like the puzzle to push back. Complete the 9×9 grid so every row, column and 3×3 box contains 1 to 9 once, calling on the more advanced techniques as the grids grow harder.
If you need the fundamentals first, our step-by-step guide covers them before you take the harder puzzles on. From there, it is all about sharper, deeper deductions.
Tips & Tricks
- On tougher grids, mapping candidates across a whole box often unlocks the next move.
- Look for two cells in a unit that share the same pair of options and rule those digits out elsewhere.
- Slow down on hard puzzles; a single careless entry can send you well off course.
Frequently Asked Questions
How hard is Sudoku Challenge?
It is aimed at players who want more of a test, with puzzles that reward the trickier deduction techniques as difficulty climbs.
Do I need experience to play it?
Not at all. You can start with the easier grids and work upward, and the linked guide covers the basics if you are new.
