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  2. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    A Sudoku with 18 clues and two-way diagonal symmetry. This section refers to classic Sudoku, disregarding jigsaw, hyper, and other variants. A completed Sudoku grid is a special type of Latin square with the additional property of no repeated values in any of the nine blocks (or boxes of 3×3 cells).

  3. Howard Garns - Wikipedia

    en.wikipedia.org/wiki/Howard_Garns

    Nationality. American. Alma mater. University of Illinois (1926) Occupation. Architect. Projects. Sudoku. Howard Garns (March 2, 1905 – October 6, 1989) was an American architect who gained fame only after his death as the creator of Number Place, the number puzzle that became a worldwide phenomenon under the name Sudoku.

  4. Mathematics of Sudoku - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_Sudoku

    Mathematical context. The general problem of solving Sudoku puzzles on n2 × n2 grids of n × n blocks is known to be NP-complete. [8] A puzzle can be expressed as a graph coloring problem. [9] The aim is to construct a 9-coloring of a particular graph, given a partial 9-coloring. The Sudoku graph has 81 vertices, one vertex for each cell.

  5. Play Sudoku Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/sudoku

    Sudoku. Completely fill the 9x9 grid, using the values 1 through 9 only once in each 3x3 section of the puzzle. By Masque Publishing. Advertisement. Advertisement. Feedback. Help. Join AOL ...

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  7. Puzzle solutions for Sunday, Sept. 22

    www.aol.com/news/puzzle-solutions-sunday-sept-22...

    Find answers to the latest online sudoku and crossword puzzles that were published in USA TODAY Network's local newspapers.

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