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Japanese Number Puzzles : A Challenging Collection of More Than 350 Logic, Sequence, and Mathematical Puzzles by Puzzler Media Staff and Anthony Immanuvel (2006, Perfect) for sale online | eBay
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Legendary Nob Yoshigahara's mathematical puzzle: Here is how to solve it
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Hand holding a red pen solving a Sudoku Japanese number puzzle Stock Photo - Alamy
a) Japanese puzzle grid corresponding to the puzzle "Chaplin," and (b)... | Download Scientific Diagram
Maki Kaji, 'father of sudoku,' dead at 69 | The Japan Times
Fiendishly difficult puzzles – how did you do? | Mathematics | The Guardian
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How to solve Japanese crosswords
