
12x12 Giant Sudoku (PuzzleMadness)
A 12x12 sudoku using 1 to 9 and A to C, one new grid a day.
139 daily sudoku in your browser, each with a page on how it plays, when it resets and where to play it.

A 12x12 sudoku using 1 to 9 and A to C, one new grid a day.

One classic 9 by 9 sudoku a day, the same for every player, with no ads.

A 16x16 sudoku using 1 to 9 and A to G, one new giant grid a day.

A sudoku wrapped around a cube, using the numbers 1 to 16.

A sudoku with grey blocks of cells that work as written-out addition sums.

A sudoku where the same digit may never sit in two cells that touch, not even diagonally.

A sudoku where the same digit may never sit a chess knight's move away from itself.

A sudoku with eight diagonal lines in an argyle pattern, and no digit repeats along any of them.

Sudoku with arrows: the circled digit equals the sum along its stalk.

A sudoku with lines between two circles: every digit on the line lies strictly between the circled ends.

Sudoku with nine coloured bubbles instead of numbers, one board for everyone each day.

A daily killer sudoku that starts with no digits, only cage sums.

Sudoku with Canadian emojis instead of numbers, fifteen new puzzles a day.

Sudoku where the nine centre squares of the boxes form an extra region.

A daily 9 by 9 sudoku on CNN Games.

A sudoku with grey lines where each digit is one more or one less than the next along the line.

Sudoku where a thick bar between two squares means their digits differ by one.

Sudoku without a grid: 81 cracked cells, groups and coloured runs.

A small daily sudoku: digits 1 to 6 in a 6x6 grid, in four grades.

A tiny 4x4 sudoku of hearts, stars, balls and sparkles, with one board a day for everyone.

Sudoku with irregular boxes, one dated puzzle a day.

A numbered jigsaw sudoku every day from SudokuWiki, with irregular regions in place of 3x3 boxes.

Killer cages on a jigsaw sudoku: sums to hit and irregular regions to fill, once a day.

A daily sudoku where dotted cages give sums instead of starting digits.

A numbered killer sudoku every day from SudokuWiki, gentle on Monday and diabolical by Saturday.

A small 6x6 killer sudoku every day: digits 1 to 6, coloured cages with sums.

One classic 9x9 sudoku a day, the same grid for everyone.

A dated 9x9 sudoku for everyone, with three mistakes allowed.

SudokuWiki's numbered daily sudoku in four grades, with notes tools and an archive.

One classic 9x9 sudoku a day, the same for everyone, shared as a grid of the boxes you solved cleanly.

A daily sudoku with a streak, plus Killer, Chaos and Mini packs to play between days.

A daily Sudoku X: both long diagonals hold 1 to 9 as well.

The gentlest of Metro's three weekday sudokus, free to play in the browser.

A sudoku with lines where any three cells in a row hold one low, one medium and one high digit.

A sudoku where every 2x2 square of cells must hold a low, a medium and a high digit.

A sudoku with lines from a circle: every digit on the line must divide the circled digit exactly.

A daily sudoku with a sum outside every row and column end.

A sudoku framed by sums: each clue is the total of the first three digits from that edge.

A sudoku with grey lines where neighbouring digits along a line differ by at least 5.

A sudoku solved from greater-than and less-than signs between squares.

The toughest of Metro's three sudokus, a new grid each weekday in the browser.

Sudoku with six colours instead of numbers, one grid a day.

Sudoku with four extra shaded 3x3 regions that must also hold 1 to 9.

A sudoku with a tenth region: the red letter i in the middle of the grid.

Sudoku with nine irregular regions in place of the 3x3 boxes, new every day.

Small 4x4 and 6x6 sudokus for children and beginners, one a day.

Four dated killer sudokus a day: sudoku rules plus cages that must add up.

Sudoku where dotted cages tell you their sums instead of giving digits.