Master of Puzzles - CalcuDoku 200 Hard to Master Puzzles 7x7 vol.26

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 same block.

• Format: Paperback
• Language: English
• ISBN: 1073808351
• ISBN13: 9781073808359
• Release Date: June 2019
• Publisher: Independently Published
• Length: 118 Pages
• Weight: 0.37 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"