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  2. Exact cover - Wikipedia

    en.wikipedia.org/wiki/Exact_cover

    When Sudoku is played with pencil and paper, possibilities are often called pencil marks. In the standard 9×9 Sudoku variant, in which each of 9×9 cells is assigned one of 9 numbers, there are 9×9×9=729 possibilities. Using obvious notation for rows, columns and numbers, the possibilities can be labeled R1C1#1, R1C1#2, …, R9C9#9.

  3. Cracking the Cryptic - Wikipedia

    en.wikipedia.org/wiki/Cracking_the_Cryptic

    The channel was set up in 2017 by two friends from England: Simon Anthony, a former investment banker, and Mark Goodliffe, a financial director. [5] [6] Anthony is a former member of the UK's world sudoku and world puzzle championship teams, while Goodliffe is a 13-time winner of the Times Crossword Championships and UK sudoku champion. [5] [6]

  4. Taking Sudoku Seriously - Wikipedia

    en.wikipedia.org/wiki/Taking_Sudoku_Seriously

    Taking Sudoku Seriously: The Math Behind the World's Most Popular Pencil Puzzle is a book on the mathematics of Sudoku.It was written by Jason Rosenhouse and Laura Taalman, and published in 2011 by the Oxford University Press.

  5. Glossary of Sudoku - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_Sudoku

    A Sudoku variant with prime N (7×7) and solution. (with Japanese symbols). Overlapping grids. The classic 9×9 Sudoku format can be generalized to an N×N row-column grid partitioned into N regions, where each of the N rows, columns and regions have N cells and each of the N digits occur once in each row, column or region.

  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. World Sudoku Championship - Wikipedia

    en.wikipedia.org/wiki/World_Sudoku_Championship

    The World Sudoku Championship (WSC) is an annual international puzzle competition organised by a national member of the World Puzzle Federation. The first event was held in Lucca , Italy , in 2006. National teams are determined by local affiliates of the World Puzzle Federation.

  8. Howard Garns - Wikipedia

    en.wikipedia.org/wiki/Howard_Garns

    Dell Pencil Puzzles and Word Games, which first published Number Place in May 1979, did not publish Garns's byline on the puzzle. However, Will Shortz , a crossword compiler for The New York Times , discovered that Garns's name appeared in the list of contributors at the front of the magazine whenever Number Place appeared, and was absent from ...

  9. Puzzle Series - Wikipedia

    en.wikipedia.org/wiki/Puzzle_Series

    It was released in Japan on June 2 as Sudoku to 3-Tsu no Puzzle: Nikoli no Puzzle Variety (数独と3つのパズル~ニコリのパズルバラエティ~, Sudoku and 3 Puzzles: Nikoli Puzzle Variety); [21] in Europe on June 9 as Sudoku – The Puzzle Game Collection; [22] and in America as Nikoli's Pencil Puzzle on October 25. [23] [24]

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