sudoku trial-and-error required?

Asked by xoristzatziki on 2012-09-20

There seems to be an inaccurate information.
"Amount of trial-and-error required to solve:"
There is no such thing in sudoku (and in the concept of sudoku).
Information needed is only:
"Are there more than one solution?"
And if there is more than one solution, game must be placed on a secondary category or, at least, on the 4th (Very Hard) category.
Most of the games which have information that a trial-and-error is required to solve, REALLY do not need a trial-and-error.

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu gnome-games Edit question
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Last query:
2012-09-20
Last reply:
2012-09-20
Warren Hill (warren-hill) said : #1

For some games of Sudoku a certain amount of trial and error may be required since placing a number in a certain square forces other moves and may lead to a contraction. This is why the game has a "tracker" function.

All solutions should however be unique, or by definition its not Sudoku. I have not personally seen any games that have more than one solution. If you have then this is a bug and should be reported as such.

I have however seen Sudoku games with more than one solution in Newspapers and magazines which suggests designing these puzzles is not trivial.

ubuntu-bug gnome-sudoku

Will start the bug reporting process.

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