However , having run out of ends , the line can not pass through all of the walls of the third five - walled room .
The solution line has one start and one end , so it can pass through all five walls of two of these rooms .
Having run out of ends , the line can not pass through all of the walls of the third five - walled room .
The solution line has one start and one end , so it can pass through all five walls of two of these rooms .