Download or read book Sudoku Small Calcudoku - 200 Hard to Master Puzzles 6x6 written by Dart Veider and published by . This book was released on 2019-11-07 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calcudoku (also known as "Mathdoku") is a mathematical and logical puzzle loosely similar to Sudoku. The objective is to fill the grid in with the digits 1 through 6 (where 6 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 (