The Japanese
Maki Kaji
, known as "
the godfather of Sudoku
" for his role in popularizing these number puzzles,
has died at the age of 69 from cancer
, according to his company
Nikoli
.
Kaji died on August 10 from
bile duct cancer, explained in a brief statement on its website the firm, the first puzzle company in Japan, founded by this Japanese who loves this type of puzzle.
"Mr. Kaji, known as the godfather of Sudoku, was
loved by puzzle fans around the world
. We would like to express our gratitude to everyone," the company noted.
The basic concept of this
number crossword
, in which you have to fill in a grid of 9x9 blocks with nine boxes in each one so that no column contains the same number from 1 to 9,
was invented by the Swiss mathematician Leonhard Euler in the 19th century. XVIII
, but its popularity would not explode until a few years ago.
Its internationalization would take place largely thanks to the Japanese publisher, who undertook the publication in the mid-1980s of
a hobby section in Monthly Nikolist magazine
and popularized the current name by which we refer to this hobby.
Since 2006, a Sudoku World Championship has been held annually, although the 2020 one was canceled due to the pandemic and the 2021 one is still on the air.
According to the criteria of The Trust Project
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