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  • White Belt KenKen®

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    pocket, 2013, Engelska, ISBN 9781454904175

    Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 and it has since taken over the puzzling world. It takes a page from karate - another Japanese

  • Black Belt KenKen®

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    pocket, 2013, Engelska, ISBN 9781454904205

    Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 and it has since taken over the puzzling world. It takes a page from karate, another Japanese

  • Third-Degree Black Belt Sudoku®

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    pocket, 2009, Engelska, ISBN 9781402746499

    This title includes 300 puzzles from prolific & popular puzzle & sudoku author - Frank Longo. It takes a page from karate - another Japanese art - each title is graded by colour:

  • Green Belt Sudoku Variants

    pocket, 2024, Engelska, ISBN 9781454950677

    Get ready to fight your way to the top of the sudoku ranks! Each book in this Martial Arts sudoku series will contain 300 puzzles, with a different blend of sudoku variants

  • Brown Belt Sudoku Variants

    pocket, 2024, Engelska, ISBN 9781454950660

    Get ready to fight your way to the top of the sudoku ranks! Each book in this Martial Arts sudoku series will contain 300 puzzles, with a different blend of sudoku variants