Killer Sudoku
Killer sudoku blends classic sudoku logic with simple arithmetic. No digits are given at the start — only the sums of dashed-outline "cages" are shown.
Generating puzzle…
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Killer Sudoku rules
- 1Rule 1
The classic row, column, and 3x3 box rules apply as usual.
- 2Rule 2
The top-left corner of each dashed cage shows its sum.
- 3Rule 3
Digits can't repeat within a single cage.
- 4Rule 4
All the cells in a cage must add up to the number shown in its corner.
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