Creator of puzzles - Calcudoku 240 Extreme (Volume 15) (Paperback) (ISBN-13: 9781986634540)

Calcudoku (also known as "Mathdoku") is a mathematical and logical puzzle loosely similar to Sudoku.
The objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that:
- Each row contains exactly one of each digit.
- Each column contains exactly one of each digit.
- Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division ( ).
- Unlike Killer Sudoku, digits may repeat within a block.

Author: Mykola Krylov, Veronika Localy
ISBN-10: 198663454X
ISBN-13: 9781986634540
Publisher: Createspace Independent Publishing Platform
Language: English
Published: 03/19/2018
Pages: 62
Format: Paperback
Weight: 0.21lbs
Size: 9.00h x 6.00w x 0.13d