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

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

Match, assemble and solve one sudoku board a day, then finish it with three more number puzzles.

A clean, ad-free sudoku with a free Daily Challenge that everyone shares.

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.

A numbered daily killer sudoku: classic sudoku rules plus dashed cages that must add up to their sums.

Sudoku with cages: every outlined group of squares must add up to its target.

A daily sudoku with no given digits, only dotted cages and their sums.

Sudoku with cages: every dotted group of cells must add up to its sum.

A dated killer sudoku every day, plus a daily Greater Than sudoku, to play online or print.

A daily sudoku where no digit repeats a knight's move away.

A sudoku with dots between cells: white for consecutive digits, black for one double the other.

A sudoku with arrowed sums outside the grid, each giving the total of a diagonal.

A sudoku with lines between two diamonds: the ends differ by at least 4 and the middle stays outside their…

A fresh sudoku every day at five levels, from a 6x6 mini to expert.

Match pairs of hidden numbers on a sudoku grid.

A daily sudoku with thermometers: digits rise from each bulb to its tip.

Sudoku from Microsoft with three daily challenges, including an Ice Breaker mode.

A daily 6x6 sudoku from LinkedIn, made with Nikoli and a three-time world champion.

A quick, compact daily sudoku from Clarín.

A small daily sudoku from the Daily Mail, solved in minutes.

A small daily 6x6 sudoku from the Polish puzzle site Łamaniec.

A daily set of word, logic and picture puzzles from Netflix, no membership needed.

A clean, ad-free sudoku app with one daily puzzle per difficulty and global leaderboards.

Three classic sudoku grids every day, one easy, one medium and one hard.

Sudoku where squares and circles mark which cells hold odd or even digits.

A sudoku with grey lines whose digits read the same from either end.

A fresh Penny Dell sudoku every day, free on Arkadium.

A sudoku with no printed digits: only white and black dots between squares.

Thirteen original daily puzzles, with optional private friend groups and medals.

A daily page of crosswords, logic grids and word puzzles, like a newspaper puzzle section.

A daily hidden word, a daily Sudoku and a daily logic grid, each with its own streak.

A Morning page and an Evening page of puzzles every day, from crossword and sudoku to Picture Cross.

A sudoku with small circles at cell corners listing digits that must appear in the four cells around them.

A daily sudoku whose boxes are nine crooked coloured regions.

A sudoku with lines that cross several boxes, and every box's share of a line adds up to the same total.

A sudoku with grey lines whose digits form a set of consecutive numbers in any order.

A sudoku with an empty grid and digit triples printed around its edges.

Sudoku with chess pieces: fill a 6x6 board so no two pieces of the same kind attack each other.

A sudoku with arrows around the edge showing whether the first three digits of a line rise or fall.

Sudoku with one hidden extra rule: read the digits the board refuses and work out what it is.

Five overlapping sudoku grids to solve as one, a new set every day.

A sudoku where each row and column clue is the sum between its 1 and its 9.

A sudoku with sums outside the grid: each one totals the digits sandwiched between the 1 and the 9.

A clean sudoku app whose daily challenge ranks countries against each other by solving time.

A 6x6 sudoku a day: fill every row, column and box with 1 to 6.

A sudoku where each digit is a building's height and edge clues count how many buildings you can see.