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Date: 2009-09-22 21:02:29Games Recreational mathematics Sudoku Crossword Puzzle Combination puzzle Mathematics of Sudoku Mathematics NP-complete problems Logic puzzles | The Dion Cube® The ultimate sudoku puzzle only available from www.sudoku.org.ukAdd to Reading ListSource URL: www.sudoku.org.ukDownload Document from Source WebsiteFile Size: 212,64 KBShare Document on Facebook |