4681619
9781932234305
Tetsuya Nishio, world champion of number-logic puzzles, reigns as the single most important figure in Sudoku in Japan. Nishio is also the inventor of O'Ekaki, or "Paint by Numbers" puzzles.Nishio, Tetsuya is the author of 'Higher Sudoku New Variations From Japan', published 2006 under ISBN 9781932234305 and ISBN 1932234306.
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