Sudoku puzzles are popular number-based puzzles. A game consists of a 9 9 grid made up
Chapter 2, Problem 53(choose chapter or problem)
Sudoku puzzles are popular number-based puzzles. A game consists of a 9 9 grid made up of nine 3 3 blocks. Each row and each column of the game must contain exactly one of the 9 digits 1 9; furthermore, each 3 3 block must contain exactly one of the digits 1 through 9. Following is a sample puzzle, used by permission from Web Sudoku at http://www.websudoku.com, where you can generate puzzles at any of four levels of difficulty. Try completing this puzzle.
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