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Miloslav Ciz 2025-04-21 21:24:21 +02:00
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sudoku.md
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@ -51,7 +51,7 @@ Of course there exist variants of sudoku, e.g. with different grid sizes, extend
There are two topics to address: solving sudoku by people and solving sudoku by computers.
Humans almost exclusively use logical reasoning techniques to solve sudoku, which include:
Humans use almost exclusively logical reasoning techniques to solve sudoku, which include:
- **scanning**: We take a look at some frequently appearing number in the grid and see which columns and rows they intersect which implies they cannot be placed in those columns and rows, possibly revealing the only possible location to place such number.
- **single remaining candidate**: When there is only one number left to fill in any column, row or subgrid, it is always clear which one it is and can be safely placed.