Mr. Kaji, a university dropout, turned a numbers game into one of the world’s most popular logic puzzles. https://ift.tt/2W2sWhH https://ift.tt/3k3YE6p World New York Times August 16, 2021 at 08:00PMMaki Kaji, the ‘Godfather of Sudoku,’ Is Dead at 69

By Livia Albeck-Ripka and Hisako Ueno from NYT World https://ift.tt/2W2sWhH
https://ift.tt/2W2sWhH https://ift.tt/3k3YE6p New York Times