It was originally a mirror and a table, and I'll tell you the answer to that one.
You look in the mirror and see what you saw. You take the saw and cut the table in half. Two halves make a whole. You escape through the hole and yell yourself hoarse. You get on the horse and ride away!
See how easy that was?
Umm... That's nice except for one small flaw...
You're in a room with no windows/doors/openings of any kind, and no light source. How are you supposed to see anything?