The objective is to fill a 9ร9 grid with digits so that each column, each row, and each of the nine 3ร3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
The Puzzel setter provides a partially solved Sudoku Puzzle, and the Program solves the Sudoku Puzzle.
To Understand the Program better check out Algorithm
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