Welcome to CalcuDoku - a logic puzzle with very simple rules.
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- Can you complete the grid such that every row and column contains every number exactly once, whilst at the same time making sure the cage clues are satisfied? Very similar to Killer Sudoku except it's addition, subtraction, multiplication and division.
- A cage clue tells you answer after the cage values have undergone the specified mathematical operation.
- Read the help/walkthrough page on CalcuDoku for the rules, a more detailed explanation, and a walkthrough.
- The Hard puzzles can be sometimes require some advanced Sudoku techniques.