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The most comprehensive and easy to navigate link directory for anything related to other puzzles and brain activities - games, toys, crosswords, quizzes, trivia, IQ, math and much more.
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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.
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