| Pollard Banknote offers a set of patented instant ticket play styles based on the popular puzzle. The challenge in Sudoku seems deceptively easy: fill in the squares of a 9 x 9 grid so each row, column, and 3 x 3 box contains the numbers 1 through 9. Like the best puzzles, Sudoku has simple rules yet is a mind-teasing and habit-forming endeavor. |