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  2. 20 Printable Sudoku Puzzles to Test Your Smarts - AOL

    www.aol.com/lifestyle/15-printable-sudoku...

    The post 20 Printable Sudoku Puzzles to Test Your Smarts appeared first on Reader's Digest. You want to start with the easy ones, but if you're an expert, you can skip to the extra hard puzzles.

  3. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    The first newspaper outside of Japan to publish a Sudoku puzzle was The Conway Daily Sun (New Hampshire), which published a puzzle by Gould in September 2004. [ 12 ] [ 13 ] Gould pitched the idea of publishing Sudoku puzzles to newspapers, offering the puzzles for free in exchange for the newspapers' attributing them to him and linking to his ...

  4. Sudoku solving algorithms - Wikipedia

    en.wikipedia.org/wiki/Sudoku_solving_algorithms

    A typical Sudoku puzzle. A standard Sudoku contains 81 cells, in a 9×9 grid, and has 9 boxes, each box being the intersection of the first, middle, or last 3 rows, and the first, middle, or last 3 columns. Each cell may contain a number from one to nine, and each number can only occur once in each row, column, and box.

  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

  6. Mathematics of Sudoku - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_Sudoku

    The general problem of solving Sudoku puzzles on n 2 ×n 2 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.

  7. Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

  8. File:Sudoku puzzle hard for brute force.svg - Wikipedia

    en.wikipedia.org/wiki/File:Sudoku_puzzle_hard...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  9. Play Daily Sudoku Online for Free - AOL.com

    www.aol.com/games/play/i-play/daily-sudoku

    Come back every day for a fresh new Sudoku puzzle! Come back every day for a fresh new Sudoku puzzle! ... Sudoku. Play. Masque Publishing. Super Crazy 8's. Play. Masque Publishing. Sweet Gummy Blast.

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