Logic
12x12 Giant Sudoku (PuzzleMadness)
A 12x12 sudoku using 1 to 9 and A to C, one new grid a day.
Daily sudoku
Fill the grid so every row, column and box holds each digit once. A new sudoku each day from newspapers, puzzle sites and apps, from gentle classics to killer cages and variant rules.
All daily sudoku
Logic
16x16 Giant Sudoku (PuzzleMadness)
A 16x16 sudoku using 1 to 9 and A to G, one new giant grid a day.
Logic
Daily Sudoku
One classic 9 by 9 sudoku a day, the same for every player, with no ads.
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3Doku
A sudoku wrapped around a cube, using the numbers 1 to 16.
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Addition Sudoku (PuzzleMadness)
A sudoku with grey blocks of cells that work as written-out addition sums.
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Anti King Sudoku (PuzzleMadness)
A sudoku where the same digit may never sit in two cells that touch, not even diagonally.
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Anti Knight Sudoku (PuzzleMadness)
A sudoku where the same digit may never sit a chess knight's move away from itself.
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Apple News+ Sudoku
Three daily sudokus in the Apple News app, from easy to challenging.
Logic
Argyle Sudoku (PuzzleMadness)
A sudoku with eight diagonal lines in an argyle pattern, and no digit repeats along any of them.
Logic
Arrow Sudoku (PuzzleMadness)
Sudoku with arrows: the circled digit equals the sum along its stalk.
Logic
Between Line Sudoku (PuzzleMadness)
A sudoku with lines between two circles: every digit on the line lies strictly between the circled ends.
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Cages (Mind Loft)
A daily killer sudoku that starts with no digits, only cage sums.
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Canoku
Sudoku with Canadian emojis instead of numbers, fifteen new puzzles a day.
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Center-Dot Sudoku (PuzzleMadness)
Sudoku where the nine centre squares of the boxes form an extra region.
Logic
Claire's Sudoku
A daily sudoku that climbs from Monday to Saturday, inside an app that teaches the techniques.
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CNN Sudoku
A daily 9 by 9 sudoku on CNN Games.
Logic
Consecutive Line Sudoku (PuzzleMadness)
A sudoku with grey lines where each digit is one more or one less than the next along the line.
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Consecutive Sudoku (PuzzleMadness)
Sudoku where a thick bar between two squares means their digits differ by one.
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Cracked Sudoku
Sudoku without a grid: 81 cracked cells, groups and coloured runs.
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Daily Jigsaw Sudoku
Sudoku with irregular boxes, one dated puzzle a day.
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Daily Killer Sudoku
A daily sudoku where dotted cages give sums instead of starting digits.
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Daily Killer Sudoku (SudokuWiki)
A numbered killer sudoku every day from SudokuWiki, gentle on Monday and diabolical by Saturday.
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Daily Puzzle (AppsEverywhere)
One new puzzle a day from 28 kinds, from sudoku and nonograms to slitherlink and star battle.
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Daily Sudoku
One classic 9x9 sudoku a day, the same grid for everyone.
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Daily Sudoku (FreePuzzles)
A dated 9x9 sudoku for everyone, with three mistakes allowed.
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Daily Sudoku (SudokuWiki)
SudokuWiki's numbered daily sudoku in four grades, with notes tools and an archive.
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Daily Sudoku (xoxoxo.live)
One classic 9x9 sudoku a day, the same for everyone, shared as a grid of the boxes you solved cleanly.
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Daily Sudoku Together
A daily sudoku with a streak, plus Killer, Chaos and Mini packs to play between days.
Word
DailyPuzzle.com
Nine small puzzles a day, from a chess mate to a dingbat, with points and a daily leaderboard.
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Deduce Daily
One hard logic puzzle a day, the same board for everyone until midnight UTC, with no hints.
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Diag (Mind Loft)
A daily Sudoku X: both long diagonals hold 1 to 9 as well.
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El Tiempo Sudoku
El Tiempo's free daily sudoku: a new grid every day.
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Entropic Line Sudoku (PuzzleMadness)
A sudoku with lines where any three cells in a row hold one low, one medium and one high digit.
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Entropy Sudoku (PuzzleMadness)
A sudoku where every 2x2 square of cells must hold a low, a medium and a high digit.
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Factor Line Sudoku (PuzzleMadness)
A sudoku with lines from a circle: every digit on the line must divide the circled digit exactly.
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Frame (Mind Loft)
A daily sudoku with a sum outside every row and column end.
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Frame Sudoku (PuzzleMadness)
A sudoku framed by sums: each clue is the total of the first three digits from that edge.
Word
fribble
A daily set of word, number and geography puzzles in one place.
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German Whisper Line Sudoku (PuzzleMadness)
A sudoku with grey lines where neighbouring digits along a line differ by at least 5.
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Good Sudoku
Three daily sudoku puzzles that get harder through the week, each with a global leaderboard.
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Greater Than Sudoku (PuzzleMadness)
A sudoku solved from greater-than and less-than signs between squares.
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GridJoy
Eighteen daily number and logic puzzles, from Sudoku to hex mazes, the same for everyone.
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Huedoku (BuzzFeed)
Sudoku with six colours instead of numbers, one grid a day.
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Hyper Sudoku (PuzzleMadness)
Sudoku with four extra shaded 3x3 regions that must also hold 1 to 9.
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Il Sudoku del Corriere
The Corriere della Sera's daily sudoku, at two levels.
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Jigsaw Sudoku (PuzzleMadness)
Sudoku with nine irregular regions in place of the 3x3 boxes, new every day.
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Jigsudo
Match, assemble and solve one sudoku board a day, then finish it with three more number puzzles.
Logic
Kids Sudoku (PuzzleMadness)
Small 4x4 and 6x6 sudokus for children and beginners, one a day.