Question about sudoku

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Question about sudoku

Postby su_question » Thu Oct 25, 2007 10:19 pm

Are there puzzles that exist that have only 1 unique solution but absolutely need trial and error at some point in order to solve them.

It's important to me that there is only 1 solution at the end of the game.

If so where can I find some puzzles with this unique property.

Also is there a special name given to these puzzles?
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Joined: 25 October 2007

Postby Ruud » Thu Oct 25, 2007 10:41 pm

You could take a look at the list of Hardest Sudokus.

However, for many of these puzzles, a solution has been presented using very advanced techniques. The definition of T&E seems to differ from player to player. One player could use a very complex move, which others would consider T&E. Also, new solving techniques are still being developed. A puzzle which requires T&E today may be solved with a new technique tomorrow.
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