> Is there a room which is so fiendishly complicated that wherever you hold the match there are some dark spots in the room? Nobody knows the answer... Yes, if

> Is there a room which is so fiendishly complicated that wherever you hold the match there are some dark spots in the room? Nobody knows the answer... Yes, if you allow walls to be curved: http://blog.zacharyabel.com/tag/unilluminable-rooms/ http://blog.zacharyabel.com/tag/unilluminable-rooms/