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Kappa PuzzlesA website by Kappa Puzzle Group, Inc. dedicated to various puzzles and games including Crosswords, Word-Finds, Fill-Ins, Cryptograms, Sudoku and other mind games.
PUZTIMEPuztime is Gakken’s comprehensive online puzzle portal designed for puzzle lovers all over the world. offers a variety of puzzles including unique variations of Number Place, Illust Logic puzzles that reveal whimsical images when completed, Cross Sums with Chinese characters, mazes and much more.
WebsudokuA great Sudoku source By Gideon Greenspan, a self-employed software and web developer living in Tel Aviv, and Rachel Lee. Greenspan has a PhD in Computer Science, specializing in bioinformatics. He was born in the UK and emigrated to Israel in 2000.
Daily-SudokuOffers free daily Sudoku, supplemental information, dedicated forum and a very popular newsletter.
Sudoku (Wikipedia)Everything there is to know about Sudoku on the world's most popular online encyclopedia - Rules and terminology, Solution methods, Difficulty ratings, Construction, Variants, Mathematics of Sudoku, History, Popularity in the media, References and External links.
Sudoku VariationsThis great page by Ed Pegg Jr., published on September 6, 2005, is the most comprehensive source for Sudoku variants. Will Shortz, Nick Baxter, and Wei-Hwa Huang are also credited for their tremendous help in researching this column. Ed Pegg Jr. is the webmaster for mathpuzzle.com.
Puzzle SpaceFind information about language and culture independent puzzles and logic games that are published in puzzle magazines: Domino Logic, Number places, Battleship puzzles and more.
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