Puzzles for Brain - CalcuDoku 200 Easy to Expert Puzzles 9x9 vol.31

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.

• • Author: Alexander Rodriguez
• • Publisher: Independently Published
• • Publication Date: November 11, 2019
• • Number of Pages: 116 pages
• • Language: English
• • Binding: Paperback
• • ISBN-10: 1707451966
• • ISBN-13: 9781707451968