Crosswords0 min ago
Sudoku
2 Answers
Does anyone have the definitive answer to what is the minimum number of starter digits for a Sudoku to be soluble to a unique solution?
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An article about Sudoku in New Scientist last December suggested a research project had found that they could not construct uniquely solvable puzzles with less than 17 givens. This had not been proven, though.
You need to be a NS subscriber to read the article online, but Wikipedia is currently saying the same thing
http://en.wikipedia.org/wiki/Sudoku
- check the Mathematics of Sudoku section of the article.
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