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Today's Puzzles
4 x 4
Easy
Medium
Hard
5 x 5 Easy Medium Hard
6 x 6 Easy Medium Hard
7 x 7 Easy Medium Hard
8 x 8 Easy Medium Hard
9 x 9 Weekly Special
5 x 5 Easy Medium Hard
6 x 6 Easy Medium Hard
7 x 7 Easy Medium Hard
8 x 8 Easy Medium Hard
9 x 9 Weekly Special
Note: take a look at the information about the difficulty levels.
All daily items change at midnight GMT. set time zone
You can also view the previous daily puzzles, and weekly specials.
Objective / Rules
- Complete the grid such that every row and column contains the numbers 1 to the size of the grid.
- Every row and column contains each number exactly once.
- A cage clue tells you the answer after the cage values have undergone the specified mathematical operation.
- The clues don't tell you which way round the numbers are, just the answer to the calculation.
- A number can appear more than once in a cage. Note: this is different to Killer Sudoku.
Read the help page on Daily CalcuDoku for the rules, a more detailed explanation, and a walkthrough.
Notes
Keyboard Options
- If you are using a device without a physical keyboard, the on-screen keyboard is numeric (0 = auto-pencil marks).
- 'use default' ➞ use the default, non-numeric keyboard (0 ≠ auto-pencil marks).
- 'disable 0' ➞ disable the 0 for auto-pencil marks.
- 'add / remove' ➞ add / remove characters, entering the same character again will remove it (by removing all duplicates and sorting).
Pencil Marks
- Pencil marks are squares with more than one digit or letter.
- They are similar to those you might use with pen and paper.
- A square might contain more pencil marks than can be seen.
Usage (if supported by your device)
- a or 0 ➞ auto-place pencil marks.
- CTRL + arrows ➞ move around the grid.
- SHIFT + # ➞ highlight all squares with that number.
- SHIFT + 0 ➞ clear highlighted squares.
- 'pencil' ➞ auto-place pencil marks.
- 'squares with' ➞ highlight all squares with that number as a pencil mark.
Checking
- 'check' ➞ check for incorrect squares.
- 'show mistakes' ➞ highlight incorrect squares when the puzzle is checked.
- What is checked:
a single number that isn't the same as the answer,
multiple numbers that don't contain the answer number.
Uniqueness
- This puzzle has exactly one correct answer.
- No guesses are required.
- Double-check alternative answers carefully, and then recheck the rules.