Solution code: Row 1 and Column 1
on 9. October 2021, 23:17 by kaitoJD
Question: how is the 9-digit diagonal cyan but not purple? If all 9 digits are forced to be unique because it is cyan, by definition wouldn’t it also be a renban line?
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manushand: You are of course correct that the long diagonal could be purple instead of cyan, for it is also a renban line. I suppose I don't remember exactly why I chose to leave it cyan. :-)
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