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He was significant in promoting the development and marketing of the game of Sudoku. He has invented or introduced various other puzzle games such as Masyu and sells 50,000 copies of his puzzle magazine Nikoli four times a year.
||This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (February 2009)|
-  - History of Sudoku
-  Independent (UK) newspaper article on Maki Kaji
-  - BBC News 'Father f Sudoku' Puzzles Next Move.
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