Killer Sudoku Puzzles - 400 Hard to Expert 9x9 vol.20

Killer Sudoku is a mix of Sudoku and Kakuro. Your goal is the same as in regular sudoku: fill every row, column and 3x3 region with the numbers 1-9 once. The difference is how you arrive at those numbers. The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met: Each row, column, and nonet contains each number exactly once. The sum of all numbers in a cage must match the small number printed in its corner. No number appears more than once in a cage. (This is the standard rule for killer sudokus, and implies that no cage can include more than 9 cells.)

Author: Alexander Rodriguez

Publisher: CreateSpace Independent Publishing Platform

Publication Date: Aug 21, 2018

Number of Pages: 230 pages

Language: English

Binding: Paperback

ISBN-10: 1725956640

ISBN-13: 9781725956643