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Black Belt Sudoko

Black Belt Sudoko

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Description
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.
Product details
Binding:
Paperback
Publisher:
Sterling Publishing Co., Inc.
Languages:
Published: English
ISBN10:
1402740247
Weight:
249 g
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