Japan is renowned for its engaging grid logic puzzles like Sudoku, Kakuro, and KenKen, enjoyed by millions worldwide. The country's unique culture of mathematical puzzles has been supported by the Academy of Recreational Mathematics since 1979.

Editor’s Note: This highlights Japan's significant contribution to the world of puzzles, showcasing its cultural impact and the enjoyment these games bring to people globally. Understanding this can enhance appreciation for the creativity and intellect behind these puzzles.