Killer Sudoku
Puzzle · 6 playsKiller Sudoku
Sudoku with cages — every dashed group must add up to its clue.
About Killer Sudoku
The sudoku for people who thought they were done with sudoku. All the familiar rules apply, but the grid is carved into dashed cages, each with a target total — and the digits inside a cage must add to it exactly, with no repeats. On the hardest boards you begin with almost nothing filled in, and the arithmetic of the cages is your only foothold. Four difficulty levels, pencil notes, and a timer for the brave. Free to play in your browser — no download, no sign-up.
How to Play
Fill the grid so every row, column and 3×3 box contains 1–9 exactly once. Each dashed cage must add up to its printed clue — with no digit repeated inside the cage. Use notes to pencil in candidates. Harder levels allow only three mistakes.