Calcu
doku
Logic & Arithmetic Puzzle
Difficulty
Easy
4×4 Grid
Medium
5×5 Grid
Hard
6×6 Grid
Expert
7×7 Grid
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How to play
Fill every cell with a digit from 1 to N (N = grid size).
Each row must contain each digit exactly once.
Each column must contain each digit exactly once.
Cells are grouped into cages with a target number and operator.
Digits inside a cage must combine (using the operator) to reach the target.
CALCUDOKU
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Outstanding logical thinking.
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