Why do some sudoku puzzles require guessing?

Sudoku does not require guessing. In fact, when solving Sudoku puzzles, you're better off NOT guessing at all. Sudoku is a logic puzzle
logic puzzle
A brain teaser is a form of puzzle that requires thought to solve. It often requires thinking in unconventional ways with given constraints in mind; sometimes it also involves lateral thinking. Logic puzzles and riddles are specific types of brain teasers.
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Brain teaser - Wikipedia
, using the power of simple deductive reasoning and process of elimination to fill in the gaps in the grid. Simply put – you don't need luck to play Sudoku.

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2023-01-25 23:32:15

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Are there some sudoku puzzles require guessing?
Can all Sudoku puzzles be solved without guessing? According to Sudoku Of The Day, “Sudoku is a puzzle involving logic—no arithmetic or guessing is required!” While you can, guess, of course, if your guess is wrong, it will throw off the rest of the puzzle and you'll need to start over.
2024-02-19 20:24:41

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

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.
2024-01-18 15:31:47

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

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