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Web Sudoku is an online sudoku website which was rated as one of the best 50 fun and games website by Time. [1] It was founded by Gideon Greenspan and Rachel Lee. [ 2 ] The website was rated as the 7265th best website in the world by Jonathan Harchick in his book The World's Best Websites . [ 3 ]
Thomas Snyder (born c. 1980) [1] is an American puzzle creator and world-champion sudoku and logic puzzle solver. He is the first person to win both the World Sudoku Championship (3 times) and the World Puzzle Championship. Snyder writes a puzzle blog as Dr. Sudoku. [2]
The first newspaper outside of Japan to publish a Sudoku puzzle was The Conway Daily Sun (New Hampshire), which published a puzzle by Gould in September 2004. [ 12 ] [ 13 ] Gould pitched the idea of publishing Sudoku puzzles to newspapers, offering the puzzles for free in exchange for the newspapers' attributing them to him and linking to his ...
Come back every day for a fresh new Sudoku puzzle! Come back every day for a fresh new Sudoku puzzle! ... Sudoku. Play. Masque Publishing. Super Crazy 8's. Play. Masque Publishing. Sweet Gummy Blast.
A typical Sudoku puzzle. A standard Sudoku contains 81 cells, in a 9×9 grid, and has 9 boxes, each box being the intersection of the first, middle, or last 3 rows, and the first, middle, or last 3 columns. Each cell may contain a number from one to nine, and each number can only occur once in each row, column, and box.
The general problem of solving Sudoku puzzles on n 2 ×n 2 grids of n×n blocks is known to be NP-complete. [8] A puzzle can be expressed as a graph coloring problem. [9] The aim is to construct a 9-coloring of a particular graph, given a partial 9-coloring. The Sudoku graph has 81 vertices, one vertex for each cell.
2015 World Sudoku Championship Sofia, Bulgaria. The World Sudoku Championship (WSC) is an annual international puzzle competition organised by a national member of the World Puzzle Federation. The first event was held in Lucca, Italy, in 2006. National teams are determined by local affiliates of the World Puzzle Federation.
Taking Sudoku Seriously: The Math Behind the World's Most Popular Pencil Puzzle is a book on the mathematics of Sudoku. It was written by Jason Rosenhouse and Laura Taalman, and published in 2011 by the Oxford University Press.