VIP Sudoku 雑誌 オンライン購読

100 Puzzles per issue !! Sudoku is a variation of the ‘magic square’ which has popped up across the world in many cultures over thousands of years. All the rows and columns add up to the same number. At the beginning of this century the Japanese puzzle maker Nikoli set the modern rules – specifically the 9x9 grid with boxes and the 32 clues limit.