Make a little space in your day for a classic number puzzle. Our daily Sudoku is the same for everyone, with one new grid at midnight UK time. Monday and Tuesday offer an Easy start, Wednesday and Thursday move to Medium, Friday and Saturday bring Hard puzzles, and Sunday is Expert. Every grid has exactly one solution and a complete path of logical deductions.
The board has nine rows, nine columns and nine smaller 3x3 boxes. Fill the empty cells with digits from 1 to 9. Each digit must appear once in every row, once in every column and once in every box. The printed digits are fixed clues. You do not add or multiply anything: Sudoku is about spotting where a digit can go.
Tap a cell and choose a number from the pad beneath the grid. On a computer, use the arrow keys and number keys. Turn on Notes to write small pencil marks instead of a final answer. Erase clears a cell, while Undo and Redo let you revisit a thought. Your unfinished board, notes and history are saved on this device, so reloading brings you back to your work.
Scan a nearly complete row, column or box first. If a cell has just one legal digit, you have a naked single. If a digit has only one home in a unit, you have a hidden single. For harder puzzles, keep tidy notes and look for pairs, triples or a digit confined to one line of a box. Hints name the next technique and highlight its evidence; they point out a wrong entry first.
Yes. Free play shows a clock, but it never affects a score or a ranking. Choose Easy, Medium, Hard or Expert and work at your own pace, with unlimited hints. There are 500 extra puzzles in each level, all separate from the daily collection. Your wins, streaks, best time, fewest moves and average finishing time stay on your device.
You begin with 1,000 points. Time costs 1 point a second on Easy, 0.6 on Medium, 0.4 on Hard and 0.3 on Expert. Each hint costs 50 points, with up to 12 hints per daily. Every completed Sudoku scores at least 100. The server clock starts when you press Start and keeps running if you leave the page. Giving up shows the solution and scores 0.
Yes. Open Helpers to switch peer highlighting, matching digits, conflict warnings or automatic note removal on or off. Fill notes writes all currently legal candidates. None of these helpers requires guessing or changes the rules.
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