Killer Sudoku Daily Cage Logic Puzzle
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Setting up the board…
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How to play
- Fill each row, column and 3×3 box with digits 1–9 once each.
- Digits in each dashed cage must total its clue, without repeating.
- Select a cell and use the keypad or keyboard. N toggles pencil notes.
- Hints explain a logical step. Undo, Redo and Restart are always free.
How to play Killer Sudoku, the daily cage logic puzzle
Killer Sudoku mixes sudoku with arithmetic. Fill the 9×9 grid so every row, column and 3×3 box holds the digits 1 to 9 once each. Dashed cages group cells, and the digits in each cage must add up to its clue without repeating.
There are few or no starting digits: the cage sums are your clues.
A new board goes live at midnight in your time zone, easy at the start of the week and hardest on Sunday.
Strategy tips
- Learn the fixed combinations. Two cells that sum to 3 must be 1 and 2. Three cells that sum to 24 must be 7, 8 and 9.
- Use the 45 rule. Every row, column and box adds up to 45. Subtract the cages inside a box from 45 to find what is left.
- Pencil in notes. Turn on Notes and write the possible digits in each cell of a cage.
- Ask for a hint. Hint picks a cell and explains the logical step that solves it.
Frequently asked questions
- Does every board have one solution?
- Yes. Every board has exactly one solution and can be solved by logic alone.
- Can digits repeat in a cage?
- No. The digits in a cage are all different, as well as following the row, column and box rule.
- Is there a keyboard?
- Yes. Type digits, use the arrow keys, and press N to switch notes on or off.
- Can I play more than one a day?
- Endless mode has unlimited killer sudoku from Easy to Expert, and the archive keeps every past daily board. It is free, with no account.