Lê Quốc Trần Anh Coordinator
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AUTO ANSWER (AFTER SEVERAL DAYS):
This is a >146 IQ question. If you've not found the solution than don't mind about it because this question has no suitable answer.
Sam Loyd - the greatest person in history on IQ questions has found this. But he gave the price $1000 for someone who can solve this. It was a mathematic shock in the 1880s, and over many years later people knew that the question has no solutions. This is 1 of billions of similar questions can be written down.
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Lê Anh Duy 19/03/2018 at 14:03It is not wrong. Just because of your OLD phone/computer
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What? The source's answer is wrong. Pls check again.
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Lê Anh Duy 19/03/2018 at 13:36
You can see the answer at: http://www.math.uconn.edu/~kconrad/blurbs/grouptheory/15puzzle.pdf