However, the modern Sudoku only began to gain widespread popularity in 1986 when it was published by the Japanese puzzle company Nikoli under the name Sudoku, meaning "single number". ![]() The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.įrench newspapers featured variations of the Sudoku puzzles in the 19th century, and the puzzle has appeared since 1979 in puzzle books under the name Number Place. ![]() In classic Sudoku, the objective is to fill a 9 × 9 grid with digits so that each column, each row, and each of the nine 3 × 3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. ![]() Sudoku ( / s uː ˈ d oʊ k uː, - ˈ d ɒ k-, s ə-/ Japanese: 数独, romanized: sūdoku, lit.'digit-single' originally called Number Place) is a logic-based, combinatorial number-placement puzzle.
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