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Sudoku is a logic-based number placement puzzle. It was invented in the U.S. in 1979 under the name "Number Place", and became popular in Japan in 1986, where it was dubbed Sudoku ("single number"). It then spread internationally in 2005. The objective is to fill a 9x9 grid so that each column, each row, and each of the nine 3x3 boxes (also called blocks or regions) contains the digits from 1 to 9. The puzzle creator provides a partially completed grid, and the player has to figure out the rest. Web Sudoku allows you to play with the puzzles online with your browser, rather than having to buy printed books of puzzles. And don't worry about running out of puzzles: based on the rules set forth, there are 6,670,903,752,021,072,936,960 possible puzzle grids. From This is True for 16 September 2007 Suggestions for further reading:
 by MobileReference Amazon Price: Customer Review: I'm not a big Sudoku fan, but I tried this book sample because I was curious how Kindle could download a program using AZW format (it turns out that the AZW format doesn't allow user interactions. This "book" is just a link to a Kindle-friendly Sudo...  by Robert Edison Amazon Price: Customer Review: I like it! However, it got a rating of 3 instead of 5 because : 1. This game comes in a book with 30 hyperlinks. It will open a page in Amazon experimental browser and you'll need to enable Wifi and javascript to play. It will consume much of y...  Amazon Price: $10.17 Customer Review: Started out with Mr. Shortz' smaller paperback style Sudoku books, then graduated to this one which never left my side. I loved it because I could easily erase and restart a puzzle I messed up. Now I'm looking at the Luxe books. And I always look ...  by Robert Edison Amazon Price: Customer Review: It was only 99 cents so I didn't read the reviews. Was a waste of 99 cents. Poor implimentation. Even at 99 cents it is outrageously overpriced. 10 puzzles only!!  by Nathan Haselbauer Amazon Price: $10.04 Customer Review: My husband loves this book. The puzzles are a little out of the ordinary for Sudoku, creating great challenges to the mind. Newsfeed display by CaRP |
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