Hawaiian Sudoku: An Original Twist to the Sudoku You Love

Many Sudoku books have become best sellers and are still very popular today. The mass majority of Sudoku books are all the same, they have a square grid. Sudoku creators have been trying to make different variations with only little success. Sudoku addicts have been craving for something new and exciting and here it isit's called Hawaiian Sudoku. Delwyn Higa, the creator of Hawaiian Sudoku, designed this puzzle by taking the opposite approach, technically the opposite of a square is a "circ...