CalcuDoku Puzzles - 200 Very Hard Puzzles 9x9 Book 16 (Paperback) (ISBN-13: 9781706372707)

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: Liam Parker
ISBN-10: 1706372701
ISBN-13: 9781706372707
Publisher: Independently Published
Language: English
Published: 11/07/2019
Pages: 118
Format: Paperback
Weight: 0.37lbs
Size: 9.02h x 5.98w x 0.25d