The challenge comes from the fact that each cell in a Sudoku puzzle has only one correct answer because of the placement of pre-filled cells.
It’s believed that it was designed by Howard Garns, a 74-year-old retired architect who liked to spend his free time designing puzzles, because Dell Magazines included his name on the list of contributors.ĭell Magazines published the puzzle game as Number Place. The present-day version of Sudoku was first published in 1979 by Dell Magazines, a company known for its many puzzle magazines and astrology magazines. This task is made more difficult by the fact that the typical Sudoku puzzle has certain digits pre-filled. Sudoku is a puzzle game that tasks its players with filling a 9×9 grid with digits so that each of the nine 3×3 subgrids, as well as each column and each row, contains all of the digits from 1 to 9.