How to do cross number puzzles?

I don't know how to do em

Comments

  • Purchase a book on Sudoku. I think this is what you are talking about. The original Sudoku had a matrix of 81 squares (9 by 9) which also had 9 squares of 9 numbers (3 by 3). The object is to place numbers in the squares with no numbers ( some numbers are filled in already) so that each line, column and square has the numbers 1 thru 9 in them.

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