Solve a random Easy - Medium - Hard Japanese-style logic puzzle chosen from today's collection.
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Today's CalcuDoku Puzzles
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
All daily items change at midnight GMT (UTC+0).
Objective / Rules
Complete the grid such that every row and column contains the digits 1 to the size of the grid.
Each row and column contains each digit only once.
A cage clue tells you the answer after the cage values have undergone the specified mathematical operation.
The clue doesn't tell you which way around the digits occur, just the answer to the calculation.
A digit can appear more than once in a cage.
Read the help / walkthrough page on CalcuDoku for a more detailed explanation.
What is a pencil mark? Pencil marks can help you keep track of your own thinking, simply enter more than one digit / letter into each square, just like you might do if you were using pen and paper. The size of the digits / letters is smaller when there is more than one digit / letter in a square. A square might contain more pencil mark digits / letters than can be shown.
Note: only when supported by your computer / device / browser / etc (and only when your cursor is in the grid).
A = auto-pencil marks (or click the check box).
CTRL + arrows = move around the grid.
SHIFT + number = highlight all squares with that number [SHIFT+0 to clear].
If you click 'Check' the system will check for incorrect squares. If 'Show mistakes when checking' is checked they will be marked in red. There are two types of error checked for:
A single number that isn't the same as the solution.
Multiple numbers that don't contain the solution number.
Every BrainBashers puzzle has exactly one correct answer, which can be found using logic and deduction alone, and no guesses are ever required. If you think that you have found another answer, then please check the rules carefully for a reason the other answer isn't allowed.
Note: BrainBashers has a Dark Mode setting.