I was trying to solve 10*10 binary puzzle and when I checked with the answer given in the book, the solution in it was different from mine. I did not repeat 1 or 0 more than twice in any row or column. Is it possible to have more than 1 solution in a binary puzzle.
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$\begingroup$ Are you sure that in your solution all the rows are distinct, and all the columns are distinct? $\endgroup$– Jaap ScherphuisCommented Jul 19, 2020 at 7:18
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2$\begingroup$ What kind of puzzle are you talking about here? $\endgroup$– Rand al'ThorCommented Jul 19, 2020 at 7:41
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$\begingroup$ "Binary puzzle" is a common type of logic grid puzzle, as seen here. $\endgroup$– Jaap ScherphuisCommented Jul 19, 2020 at 7:56
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$\begingroup$ You've mentioned that your solution met one of the rules (no contiguous identical triplets), but there are other rules you didn't mention: each row and column should have the same sum, no two rows are identical, and no two columns are identical. $\endgroup$– hdsdvCommented Jul 19, 2020 at 8:03
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$\begingroup$ This puzzle is also known as Unruly in Simon Tatham's puzzle collection. $\endgroup$– MagmaCommented Jul 19, 2020 at 10:52
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1 Answer
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It's not clear what you mean by "a 10×10 binary puzzle". But it's possible that the designers of the puzzle accidentally left the puzzle with multiple solutions. A pure logic puzzle shouldn't have multiple solutions, but authors do make mistakes.
