About Mathdoku
Pure mental arithmetic disguised as a puzzle. Every cage shows an operation (+, -, x, /) and a target number. You figure out which digits make it work while following sudoku's non-repeating rules. No given numbers, just you vs maths. Play unlimited puzzles.
How to Play
Fill the grid (size varies) so no number repeats in any row or column. Each cage contains digits that produce the target number using the shown operation. In a cage, you can repeat digits. For example: "12x" in 2 cells could be 3,4 or 2,6.
Mathdoku Tips
Casual Mathdoku is ideal for building arithmetic intuition. Practice factor pairs, sum combinations, and division reasoning without time pressure.
Look for cages with only a few possible combinations, then use row and column constraints to lock in placements.