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HomeEverything ElseBig Book of 620 Sudoku Puzzles for the Frustrated Fanatic |
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SUDOKU FANATIC Jun 05, 2010 Big Book of 620 Sudoku Puzzles for the Frustrated Fanatic
Addictive! To check answers must go to a special address on the web. So, very, very challenging and fun.
2 of 43 found the following review helpful:
Good Book Dec 30, 2007 The objective is to fill a 9×9 grid so that each column, each row, and each of the nine 3×3 boxes (also called blocks or regions) contains the digits from 1 to 9, only one time each (that is, exclusively). The puzzle setter provides a partially completed grid.
Completed Sudoku puzzles are a type of Latin square, with an additional constraint on the contents of individual regions. Leonhard Euler is sometimes incorrectly cited as the source of the puzzle, based on his work with Latin squares.
The modern puzzle was invented by an American architect, Howard Garns, in 1979 and published by Dell Magazines under the name "Number Place It became popular in Japan in 1986, after it was published by Nikoli and given the name Sudoku, meaning single number. It became an international hit in 2005.
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