Sudoku is a logic based puzzle, somewhat similar to a crossword puzzle, except it uses digits instead of words. The name Sudoku is an abbreviation of a Japanese phrase which means the digits must remain single. It is also sometimes called Number Place or Nampure.
The history of Sudoku
You can find predecessors of Sudoku as early as 1895, when an early version or variant of Sudoku appeared in a French newspaper.
The game now known as Sudoku was not invented until 19…