Play sudoku and solve sudoku everyday.By doing it frequently,children can improve their ability of logic thinking,adults can relieve pressure of work and the old can slow the cognitive decline associated with aging.
Inpuzzles Hitori is a Sudoku-opposite logic puzzle. The object of Hitori is to delete all duplicates in all rows and columns (for example, in Sudoku you had to perform otherwise: input missing non-duplicates).
