Medium to Hard Calcudoku Puzzles 7x7 Book for Adults: 200 Puzzles at the Levels of Medium to Hard (Paperback) (ISBN-13: 9798704353515)

The book contains 200 Calcudoku puzzles 7x7 at the level of Medium to Hard. Medium puzzles 100, Hard puzzles 100. All riddles have only 1 solution. 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: Alena Gurin
ISBN-10: 870435351X
ISBN-13: 9798704353515
Publisher: Independently Published
Language: English
Published: 02/03/2021
Pages: 122
Format: Paperback
Weight: 0.38lbs
Size: 9.00h x 6.00w x 0.26d