Sudoku variants

Same logic, new twists. Each variant adds one rule to classic Sudoku — and each puzzle here has exactly one solution, three difficulty levels and hints that explain the move.

Killer Sudoku

Dashed cages with target sums add a layer of arithmetic to classic Sudoku.

Jigsaw Sudoku

Swap the square boxes for irregular shapes and every familiar pattern changes.

Diagonal Sudoku

The two long diagonals join the rules — an elegant twist for classic solvers.

Which variant should I try first?

If you enjoy classic Sudoku, start with Diagonal Sudoku: it adds just one familiar rule. Jigsaw Sudoku changes the shape of the boxes and rewards careful scanning, while Killer Sudoku blends logic with a little arithmetic and is the favourite of many experienced solvers. For the history and many more variants, read our tour of Sudoku variants.