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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. Maki Kaji - Wikipedia

    en.wikipedia.org/wiki/Maki_Kaji

    The number game Sudoku appeared in early issues of Nikoli. [7] He formulated the name "Sudoku" while he was scrambling to get to a horse race. [ 4 ] [ 10 ] He shortened it from Suuji wa dokushin ni kagiru ("numbers should be single") at the urging of his fellow workers. [ 10 ]

  4. Thomas Snyder - Wikipedia

    en.wikipedia.org/wiki/Thomas_Snyder

    He has also written puzzles for events including the World Sudoku Championship, U.S. Puzzle Championship, the MIT Mystery Hunt, Gen Con, and the Microsoft Puzzle Picnic. [4] In early 2012, Snyder founded his publishing company Grandmaster Puzzles. On April 9, 2012, he began selling his first title from the newly formed company, The Art of Sudoku.

  5. Mathematics of Sudoku - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_Sudoku

    A Sudoku whose regions are not (necessarily) square or rectangular is known as a Jigsaw Sudoku. In particular, an N × N square where N is prime can only be tiled with irregular N -ominoes . For small values of N the number of ways to tile the square (excluding symmetries) has been computed (sequence A172477 in the OEIS ). [ 10 ]

  6. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    The world's first live TV Sudoku show, held on July 1, 2005, Sky One. The world's first live TV Sudoku show, Sudoku Live, was a puzzle contest first broadcast on July 1, 2005, on the British pay-television channel Sky One. It was presented by Carol Vorderman. Nine teams of nine players (with one celebrity in each team) representing geographical ...

  7. Sudoku solving algorithms - Wikipedia

    en.wikipedia.org/wiki/Sudoku_solving_algorithms

    A Sudoku may also be modelled as a constraint satisfaction problem. In his paper Sudoku as a Constraint Problem, [14] Helmut Simonis describes many reasoning algorithms based on constraints which can be applied to model and solve problems. Some constraint solvers include a method to model and solve Sudokus, and a program may require fewer than ...

  8. 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

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