Maki Kaji

Maki Kaji is one of those figures who makes you stop and think — the man didn't invent Sudoku, he named it, packaged it, and unleashed it on the entire planet, which honestly takes a very particular kind of genius. Born in Sapporo in 1951, he co-founded Nikoli, the puzzle magazine that turned a quiet number-placement grid into a global obsession, and giving it the name "Sudoku" was the stroke that made it stick. There's something almost playfully understated about that — no flashy invention, just an eye for what people would love and the business sense to put it in front of them. He passed away in August 2021 at 69, which felt too soon, but every airport bookshop puzzle book, every newspaper sudoku grid, every phone app bearing that 9×9 layout is basically his legacy winking at you. Not bad for a guy from Hokkaido with a knack for puzzles.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Maki Kaji (October 8, 1951 – August 10, 2021) was a Japanese businessman and entrepreneur born in Sapporo, Hokkaido. He is widely credited as the "Godfather of Sudoku" for coining the name and popularizing the number-placement puzzle through his puzzle magazine publishing company, Nikoli. Although he did not invent the puzzle's underlying concept, his commercial acumen and branding made Sudoku a global phenomenon. He passed away on August 10, 2021, at the age of 69.

Name (English)

Maki Kaji

Name (Japanese)

鍜治真起

Reading

かじ まき

Born

October 8, 1951 – August 10, 2021

Origin

Sapporo, Hokkaido, Japan

Occupation

Businessman / Entrepreneur

Zodiac / Chinese zodiac

Libra / Rabbit

• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E9%8D%9C%E6%B2%BB%E7%9C%9F%E8%B5%B7
• Wikidatahttps://www.wikidata.org/wiki/Q11650769

Tags

• From Hokkaido
• Businessman
• Entrepreneur

Last updated

November 2, 2026

Only publicly available facts are listed; non-public or unconfirmed items are omitted. Base data was compiled from Wikidata from June 2026 onward; ages are recalculated daily and deaths are checked against Wikidata on an ongoing basis. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.