Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3) - Couverture souple

Khomiak, Dmytro; Veider, Dart

 
9798602767322: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)

Synopsis

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 (+) and subtraction (-).
• Unlike Killer Sudoku, digits may repeat within a block.

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