Black Belt Sudoko - Softcover

Michael Rios

Softcover

ISBN 10: 1402740247 ISBN 13: 9781402740244

Publisher: Sterling Publishing Co., Inc., 2005

Synopsis

Sudoku (数独 sūdoku?, すうどく) About this sound listen (help·info); English pronunciation: /suːˈdoʊkuː/ soo-DOH-koo is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid (also called "boxes", "blocks", "regions", or "sub-squares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution. Completed puzzles are always a type of Latin square with an additional constraint on the contents of individual regions. For example, the same single integer may not appear twice in the same 9×9 playing board row or column or in any of the nine 3×3 subregions of the 9×9 playing board. The puzzle was popularized in 1986 by the Japanese puzzle company Nikoli, under the name Sudoku, meaning single number. It became an international hit in 2005.

Edition details

• Publisher: Sterling Publishing Co., Inc.
• Publication date: 2005
• Language: English
• ISBN 10: 1402740247
• ISBN 13: 9781402740244
• Binding: Paperback