Washington Post Sudoku

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Sudoku originally called Number Place, 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.


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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.



Sudoku Quest is based on the brain bendingly addictive puzzle game that has taken the world by storm. Choose from four levels of difficulty that will cater for beginners as well as Sudoku masters. There are hints for players who need help solving a board, and a range of elemental themes for those who want to customise there game. Sudoku Quest can generate an endless stream of unique Sudoku boards that will keep you hooked for hours. Play well and you could achieve high score status. So if you like addictive puzzle games that need skill and logic to complete, then Sudoku Quest is for you. Download Sudoku Quest for FREE and enjoy:

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Print out the puzzles easily, and solve them on paper
4 elemental themes to choose; fire, wind, earth and water
4 levels of difficulty, from novice to Sudoku veteran
Easy to play, no messy rubbing out if you make a mistake



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