How is jigsaw sudoku different from classic sudoku?

The boxes are replaced by nine irregular shapes. The rules for rows and columns are the same, and the shapes make you look at the grid in a new way.

Is there a large print jigsaw sudoku?

It is being made now, with every word and number at 16 point or more.

Jigsaw sudoku books, with nine bold shapes

Sudoku with nine bold shapes in place of the boxes, for a fresh kind of challenge.

See the books How the levels work

What is jigsaw sudoku?

Jigsaw sudoku, also called irregular sudoku, is a 9 by 9 grid split into nine bold shapes of nine cells each, instead of the usual 3 by 3 boxes. You place 1 to 9 so that every row, every column and every shape holds each digit exactly once. Every puzzle has exactly one solution, checked by computer.

How to solve it

1Look at the bold lines to see the shapes. A shape can reach across several rows and columns.
2Find a digit that can only go in one place in its row, column or shape.
3Write it in, then look again: each digit makes the next one easier to find.
4The answers are at the back, with the digits you fill in printed lighter.

Levels

What Easy, Medium and Hard mean here

As in all our sudoku, the level is the hardest method a puzzle needs, not the number of digits it gives.

Easy
Every step is a cell with only one digit left, or a digit with only one place to go in its row, column or shape.
Medium
The easy steps run out. To go on you need a new method, such as pairs or pointing.
Hard
Every puzzle needs at least one advanced method. Still solved by logic alone, and never by guessing.

The books