Master of Puzzles Calcudoku - 400 Hard to Master Puzzles 9x9 Vol.20

by James Lee

Each puzzle consists of a grid containing blocks surrounded by bold lines. The object is to fill all empty squares so that the numbers 1 to N (where N is the number of rows or columns in the grid) appear exactly once in each row and column and the numbers in each block produce the result shown in the top-left corner of the block according to the math operation appearing on the top of the grid. In CalcuDoku a number may be used more than once in the...

• Format: Paperback
• Language: English
• ISBN: 1090559038
• ISBN13: 9781090559036
• Release Date: March 2019
• Publisher: Independently Published
• Length: 230 Pages
• Weight: 0.69 lbs.
• Dimensions: 0.5" x 6.0" x 9.0"