Calcudoku is a mathematical and logical Puzzle loosely similar to Sudoku. - Each bold-outlined group of cells (block) contains digits which achieve the specified result using t. - Each column contains exactly one of each digit.
The objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that: - Each row contains exactly one of each digit.
It was invented by a Japanese mathematics teacher Tetsuya Miyamoto.
Calcudoku is a mathematical and logical Puzzle loosely similar to Sudoku