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The thing is I know about the rule of equal number in each row and column, and have used it to solve a few 10x10, but when switching to a 4x4 I forgot it exists
by readerrrr 12y ago
The thing is I know about the rule of equal number in each row and column, and have used it to solve a few 10x10, but when switching to a 4x4 I forgot it exists. I took some time and went trough the rules I knew, before posting this "error", but that one rule was gone.