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By BY LIVIA ALBECK-RIPKA AND HISAKO UENO from NYT World https://ift.tt/2W2sWhH

Maki Kaji, ‘Godfather of Sudoku,’ Dies at 69


By BY LIVIA ALBECK-RIPKA AND HISAKO UENO from NYT World https://ift.tt/2W2sWhH

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