how to play killer sudoku To solve a Sudoku puzzle, one must look for cells where only one number is possible, or rows/columns/blocks where a specific number has only one possible placement.
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how to play killer sudoku The objective of Sudoku is to fill a 9x9 grid with numbers so that each column, each row, and each of the nine 3x3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contain all of the digits from 1 to 9. sudoku cheat sheet Step 4: Use Pigeonhole Principle The pigeonhole principle states that if you have more items than containers, at least one container must have more than one item.
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