<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass[../main.tex]{subfiles}

\begin{document}

	\problem{How Does the Prisoner Escape?}

	This dungeon has $49$ cells. In $7$ cells ($A$ to $G$ in the diagram) there is a locked door (black bar). The keys are in cells $a$ to $g$ respectively. The other doors open only from one side, as shown. \\

	\medskip

	How does the prisoner in cell $O$ escape? He can pass through any door any number of times and need not unlock the doors in any special order. His aim is to get the key from cell $g$ and use it to escape through cell $G$

	\vfill

	\begin{figure}[h]
		\centering
		\includegraphics[width=8cm]{121}
	\end{figure}
	\vfill

	Extra copies of the dungeon are on the next page.
	\pagebreak

	\vfill
	\begin{figure}[h]
		\centering
		\includegraphics[width=8cm]{121}
	\end{figure}
	\vfill
	\begin{figure}[h]
		\centering
		\includegraphics[width=8cm]{121}
	\end{figure}
	\vfill
	\pagebreak

\end{document}</pre></body></html>