Publisher's Synopsis
Calcudoku (also known as "Square Wisdom") is a mathematical and logical puzzle.
HOW TO PLAY
The objective is to fill the grid in with the digits 1 through 7 (where 7 is the number of rows or columns in the grid) such that:
Each row contains exactly one of each digit.
Each column contains exactly one of each digit.
Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division (