Sudoku Puzzles

A daily workout for the curious mind

Free sudoku for every kind of puzzle person

A good sudoku puzzle already has the answer. It's had it the whole time. It's simply waiting to find out whether you do too, which sounds a little smug when you put it that way, but is actually one of the more enjoyable negotiations a person can have with a grid. We think that kind of focused, satisfying puzzle-solving is one of life's better uses of ten minutes, especially with something warm to drink.

daily Sudoku

Saturday, 6 June, 2026

Our puzzles start at Easy and climb steadily through Medium, Hard, and Extra-Hard, arriving finally at Diabolical. All five are a genuine pleasure. We should mention, purely as a courtesy, that the Diabolical ones are called that for a reason. A very good reason. We believe in you completely, we just also believe in being honest.

How to Play Sudoku

A sudoku puzzle is a 9x9 grid, divided into nine smaller 3x3 boxes. Some of the squares already have numbers in them. Your job is to fill in the rest.

The rules are these: every row, every column, and every 3x3 box must contain the numbers 1 through 9, each appearing exactly once. That's it. No mathematics required, no special knowledge, no prior experience with grids of any kind. The numbers are really just symbols. You could use nine different fruits and it would work exactly the same way. It would just be a lot messier.

The best way to start is to look for rows, columns, or boxes that are already nearly full, since those leave you fewer possibilities to work through. Each number you place will tell you something about where other numbers can and can't go. From there, one number leads to another. This is either very satisfying or very addictive. Possibly both.

About Our Difficulty Levels

Our puzzles are rated using the Sudoku Explainer (SE) rating system, one of the most widely used standards in sudoku difficulty measurement, which is a more competitive field than you might expect. The SE system measures difficulty based on the techniques required to solve a puzzle: the higher the rating, the more advanced the approach needs to be. Each of our five difficulty levels corresponds to a specific SE rating range.

(SE rating: 1.0 to 1.2)
A genuinely pleasant place to start. These puzzles can be solved using straightforward logic, no advanced techniques required. Settle in, focus, and enjoy the satisfying click of everything falling into place.

(SE rating: 1.3 to 2.5)
A noticeable step up from Casual, with enough resistance to keep things interesting. You'll need to look a little harder, but the moment it opens up is well worth the extra attention.

(SE rating: 2.6 to 3.4)
These puzzles mean business. You'll need to think several steps ahead, consider multiple possibilities at once, and probably put your phone in another room.

(SE rating: 3.5 to 6.9)
Not for the uncommitted. Fierce puzzles require more patience, focus, and a willingness to sit with uncertainty for longer than is entirely comfortable. Most people find this deeply satisfying. We are most people.

(SE rating: 7.0 and above)
We named these with complete sincerity. They are genuinely difficult, technically demanding, and absolutely not necessary for a good time, unless you are the kind of person for whom this is exactly a good time. If that's you, we have nothing but admiration.