Are sudoku puzzles unique?

The short answer is no.
While people commonly think that Sudokus can only have one unique solution, any puzzle with seven or fewer starting clues must mathematically have multiple solutions. This is because in these Sudoku puzzles there cannot be a clue for every digit from 1 to 9 in the initial clue.

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2024-01-18 15:31:47

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Are there sudoku puzzles that cannot be solved?
Realistically, no! There are 6,670,903,752,021,072,936,960 possible solvable Sudoku grids that yield a unique result (that's 6 sextillion, 670 quintillion, 903 quadrillion, 752 trillion, 21 billion, 72 million, 936 thousand, 960 in case you were wondering). That's way more than the number of stars in the universe.
2024-02-14 22:50:24

Is it possible to solve all sudoku puzzles?
Realistically, no! There are 6,670,903,752,021,072,936,960 possible solvable Sudoku grids that yield a unique result (that's 6 sextillion, 670 quintillion, 903 quadrillion, 752 trillion, 21 billion, 72 million, 936 thousand, 960 in case you were wondering). That's way more than the number of stars in the universe.
2024-02-07 09:17:03

Are there impossible sudoku puzzles?
The puzzle is called the Miracle Sudoku and it's made by fellow puzzle legend Mitchell Lee. And here are the special rules: “Any two cells separated by a knight's move or a king's move (in chess) cannot contain the same digit. Any two orthogonally adjacent cells cannot contain consecutive digits.”
2023-06-04 01:42:51

Are sudoku puzzles computer generated?
We talked earlier about the history of Sudoku, how Wayne Gould and his Pappocom puzzles, his company, there had a puzzle maker, it was all computer generated. He actually enabled the puzzle Sudoku to be widely accepted in these newspapers by giving them the puzzles that he computer generated.
2023-03-18 07:47:30

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