Japanese publisher dubbed the “father of Sudoku”, Maki Kaji has died of cancer at 69. He was known for his role in popularising the numbers puzzle Sudoku. In a notice posted Monday, August 16, Nikoli said Maki Kaji died at home on August 10 after battling cancer, and a memorial service would be held at … Continue reading ”Father of Sudoku”, Maki Kaji Dies At 69