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\begin{document}


\begin{center}
{\Large Puzzle 8 - SOLUTION}

\bigskip
\end{center}

\begin{problem}
We are at a cross road. One road leads into a dangerous swamp, the other
road leads into a town. There is a pair of identical twins on the crossing.
We know that one twin always tells the truth, the other twin always lies. We
are allowed to ask only one question from only one brother. Is there a way
to find out which road leads to town?
\end{problem}

\begin{solution}
"If I asked your brother to point at the road to town, which road would he
point at?" No matter, which brother we asked, either one would point out the
road to danger.
\end{solution}

\end{document}