Featured Mini Sudoku boards
A curated set of 45, named and sorted from gentle to punishing. 0 / 45 solved
Why a set list instead of random boards
Unlimited mode hands you a fresh board whenever you want one, which is perfect for a quick session. This list is for people who would rather work through something with a beginning and an end. Each board has a name, the set runs from easy to hard, and the counter at the top keeps score of how far you have got.
Your progress is stored in your own browser, so there is nothing to sign up for. Clearing your browsing data resets it.
How the difficulty is set
On a six by six grid the solving techniques hardly change, so the real lever is how many numbers you start with. Easy boards begin with 18 of the 36 squares filled, medium with 14, and hard with only 10 to 12. Every board, at every level, is checked to have exactly one solution that can be reached by logic alone.