sudoku

Sudoku (Japanese: 数独, Korean:스도쿠) is a number puzzle, a puzzle that fills a table with numbers from 1 to 9 with 9 by 9 by 9. In 2005, the words and puzzles spread around the world, abbreviating "Number can only be used once." The method of solving the puzzle should include only one number to nine in the same line, and a small grid of 3x3 compartments should not overlap with one to nine numbers.