A Sudoku is a puzzle involving a 9x9 grid into which the numbers one to nine must be placed. The catch is that each row, column and 3x3 box has ... Phistomefel ring is a very nice example of ...

These puzzles are usually at least a week old, and Apple also marks these as Easy ... with Sudoku, you have to place the numbers one to nine into a square 9x9 grid. There are nine 3x3 blocks ...