Medium sudoku grids with 30 to 35 clues. Each has one solution and needs hidden singles and pointing pairs on top of naked singles, but nothing harder. The step where scanning by digit starts to pay off. No app, no sign-up, no interstitial before you play; works offline and fully from the keyboard.
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A Medium grid is rated as needing hidden singles, pointing pairs or pointing triples at least once, and nothing beyond them. Naked singles still do most of the work.
A hidden single is a digit with only one possible cell in a row, column or box. The cell itself may still have several candidates, which is why looking at cells alone misses it. Pick a digit, say 7, and go box by box: for each box without a 7, cross off the rows and columns that already have a 7. If one cell is left, it is the 7.
Sometimes a digit’s possible cells inside a box all lie in one row or one column. The digit must go in that line within the box, so it cannot go anywhere else in the same line. This is a pointing pair (two cells) or pointing triple (three). It does not place a digit by itself; it removes candidates, which then creates a new single somewhere along that line.
Sweep digits 1 to 9 for hidden singles, then check the cells you just changed for naked singles. When a sweep finds nothing, look for a box where a digit is confined to one line.
The timer starts on your first move and pauses when you switch tabs. Medium stats stay in your browser: played, won, win rate, best and average time. Undo and redo cover the whole game. The first two hints per puzzle are free; later hints may offer a short ad or a 30-second wait. A puzzle code such as A7K3Q (?p= in the address) replays the same grid, and the win panel gives a result to share.
Medium grids also print as PDFs.
Medium sudoku plays on a phone with a digit pad that counts the remaining digits, and on a computer entirely from the keyboard. Tidy Puzzles runs entirely in your browser: there is no app to install, no account to create and no interstitial before you can play. After the first visit the game also works offline, because each puzzle is generated on your device from a seed. Every board can be played with the keyboard alone, on a phone or a desktop, and your stats and unfinished puzzles stay in this browser rather than on a server.
Between 30 and 35 here, and every grid has exactly one solution.
Easy needs naked singles only. Medium also needs hidden singles and pointing pairs or triples.
A digit that has only one possible cell in a row, column or box, even though that cell could hold other digits.
A digit confined to one row or column inside a box, which removes it from the rest of that line.
No. A solver checks every Medium grid against these techniques first.
All five levels, the daily, kids grids, printables and the solver.
36 to 45 clues, naked singles only.
26 to 30 clues, adds pairs, triples and box-line reduction.
24 to 27 clues, adds X-wing, Y-wing and swordfish.
One grid a day for everyone, Hard by default, with streaks.
Medium grids as a PDF, with solutions at the end.
Sums instead of rows: the crossword cousin of sudoku.
Picture logic puzzles, always solvable without guessing.
Last updated 2026-09-27. Written and maintained by the Tidy Puzzles team; puzzles are generated on your device. How it works.