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Sudoku Pro ⑨

Sudoku is a logic-based, combinatorial number-placement puzzle

Sudoku is a logic-based, combinatorial number-placement puzzle

Sudoku Pro ⑨

by Xie KeMing
Sudoku Pro ⑨
Sudoku Pro ⑨
Sudoku Pro ⑨

What is it about?

Sudoku 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 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.

Sudoku Pro ⑨

App Details

Version
1.0
Rating
NA
Size
13Mb
Genre
Puzzle
Last updated
May 14, 2017
Release date
May 14, 2017
More info

App Screenshots

Sudoku Pro ⑨ screenshot-0
Sudoku Pro ⑨ screenshot-1
Sudoku Pro ⑨ screenshot-2
Sudoku Pro ⑨ screenshot-3
Sudoku Pro ⑨ screenshot-4

App Store Description

Sudoku 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 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.

Completed games 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 row, column, or any of the nine 3×3 subregions of the 9x9 playing board.

French newspapers featured variations of the puzzles in the 19th century, and the puzzle has appeared since 1979 in puzzle books under the name Number Place. However, the modern Sudoku only started to become mainstream in 1986 by the Japanese puzzle company Nikoli, under the name Sudoku, meaning "single number". It first appeared in a US newspaper and then The Times (UK) in 2004, from the efforts of Wayne Gould, who devised a computer program to rapidly produce distinct puzzles.

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