Calcudoku · Math Logic Puzzles

Enjoy Calcudoku, a free puzzle game that tests your math and logic! If you like Sudoku puzzles, you will love Calcudoku! About Calcudoku math puzzles: Every Calcudoku has a single solution that can be reached logically. Like Sudoku, fill in the grid such that no two digits repeat in any column or row. Use the shapes in the grid as your guide.