what is the minimum number of hints must be provide in a Sudoku with only one solution in order to reach the answer?
Also if you are interested, please provide a reference.
2026-04-28 09:59:11.1777370351
what is the minimum number of hints must be provide in a Sudoku with only one solution in order to reach the answer?
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According this this link, $17$ is the smallest number of hints.
The paper is at http://arxiv.org/abs/1201.0749 .