sudoku 9x9 board digits logic game

Sudoku the cult puzzle .... in 9x9 rows of numbers .... can you make it that every number in each row occurs only once? Sudokus are squares of numbers, each row of columns may only have one of the numbers from 1 to 9 only once. This puzzle is best played with any sudoku template. Never draw and erase in an unsolved sudoku again. With these handy plugs you can lay out any jigsaw you are working on from a book or a newspaper and mark them with the red or black sides of the plugs. Each piece is double-sided with colored numbers so you could play with red for sure answers or black for guesses, or in other words ...