Daily Jigsaw Sudoku

Jigsaw Sudoku, sometimes called irregular sudoku, works like the classic puzzle: every row, every column and every box holds each number once. The difference is the boxes. Instead of neat 3x3 squares, the grid is cut into odd shapes that wind across the board, so the usual box scanning habits stop working and you have to read each region on its own terms.

The Special Daily Jigsaw Sudoku on puzzle-jigsaw-sudoku.com is the same for every player on its date, which is shown beneath the grid. It is not always the standard size: the puzzles for 2 and 28 October 2026 were 10 by 10 grids with ten regions, where the letter A stands for 10. The site also has Easy, Normal and Hard grids in 5x5, 7x7 and 9x9, weekly and monthly specials, a Daily Sandwich Jigsaw Sudoku as a second daily, and a Hall of Fame for the standard sizes. It is free with ads, which patrons can remove, and the site links to the PuzzleGym app for iPhone and Android. Patrons of the site can go back through the last 30 daily puzzles; everyone else plays the current day's.

It suits sudoku players who can finish a standard grid without trouble and want something that makes them look at the board differently, without learning a whole new set of rules.

The site can be switched to more than a dozen other languages from the flags in its side menu, among them German, French, Spanish, Japanese and Chinese. On a phone the number buttons sit in a row under the grid, and a settings menu turns on checks such as highlighting duplicate numbers.