Killer Sudoku

Tentang game

Play Killer Sudoku online free. Cage sum puzzle with four difficulty levels, daily challenge, notes, hints, undo, timer and stats.

How to play

How do you play Killer Sudoku?

Fill a 9x9 grid with digits 1-9 so each row, column, and 3x3 box contains every digit exactly once. Additionally, each dotted-line cage must sum to the small number in its corner, with no repeated digits inside a cage.

What makes Killer Sudoku different from regular Sudoku?

Killer Sudoku adds cage constraints — groups of cells that must sum to a given total with no repeated numbers. Unlike regular Sudoku, no starting numbers are given; all clues are cage sums.

What is the 45 rule in Killer Sudoku?

Each row, column, and 3x3 box must sum to 45 (1+2+...+9). You can use this to deduce the value of cells outside known cages within a row, column, or box.

Can I play Killer Sudoku on my phone?

Yes. The game is fully responsive with touch controls. Tap a cell to select it, then tap a number to fill it or toggle notes mode for pencil marks.