Killer Sudoku

Killer Sudoku. Cages sum to the small number in their corner. Digits cannot repeat within a cage.

How to play

Fill the 9×9 grid so every row, every column, and every 3×3 box contains the digits 1 to 9 with no repeats — the classic Sudoku rule. Killer Sudoku adds one twist: Cages sum to the small number in their corner. Digits cannot repeat within a cage.

Every Killer Sudoku puzzle is free to play in your browser — no ads, no sign-up, and it works offline.