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Some hobbyists have developed computer programs that will solve Sudoku puzzles using a backtracking algorithm, which is a type of brute force search. [3] Backtracking is a depth-first search (in contrast to a breadth-first search), because it will completely explore one branch to a possible solution before moving to another branch.
The world's first live TV Sudoku show, held on July 1, 2005, Sky One. The world's first live TV Sudoku show, Sudoku Live, was a puzzle contest first broadcast on July 1, 2005, on the British pay-television channel Sky One. It was presented by Carol Vorderman. Nine teams of nine players (with one celebrity in each team) representing geographical ...
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 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.
Description: Sudoku layout: Date: 12 September 2006: Source: SVG version of "Sudoku-by-L2G-20050714.gif," a Sudoku layout generated by the GNU program Su Doku Solver and contributed in the public domain by Lawrence Leonard Gilbert.
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Example of a Killer Sudoku problem Solution to the example above The same example problem, as it would be printed in black and white. Killer sudoku (also killer su doku, sumdoku, sum doku, sumoku, addoku, or samunanpure サムナンプレ sum-num(ber) pla(ce)) is a puzzle that combines elements of sudoku and kakuro.
The solution was then made by solving the board using the Sudoku solver made by Peter Norvig, Solving Every Sudoku Puzzle. The Wordoku puzzle it self was made by first removing the diagonal numbers wich initially made up the word "WIKIPEDIA", and then running the puzzle through a program which reduces the sudoku to the smallest possible puzzle ...
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