Are You a Math Genius?
At the age of 74, retired Indianapolis architect Howard Garns saw his new type of logic puzzle published in the May 1979 issue of Dell Pencil Puzzles & Word Games, which trademarked the name "Number Place." In April 1984, the Monthly Nikolist published the puzzle as Suuji Wa Dokushin Ni Kagiru ("the numbers must be single") in Japan. Kaji Maki, the president of Nikoli, abbreviated the name to Sudoku - (Su = number, Doku = single), and trademarked the name. In 2005, Sudoku became popular worldwide. Due to trademarks, the puzzle is known by its English name Number Place (or nanpure) in Japanese-speaking countries, and by its Japanese name Sudoku in English-speaking countries. Howard Garns died in 1989 at age 84, just a few years before his creation became a worldwide phenomenon. In 2004, New York Times crossword editor Will Shortz was the first to identify Howard Garns as the original inventor, whose name was listed in the back of all Dell issues containing a Number Place puzzle, and only those issues. For this particular puzzle, try starting with the center square, then the center row.
Wolfram SpikeyPuzzles provided by Wolfram Research, Makers of Mathematica