Mono Monday: Illuminate

Clas Löfwall, Professor Emeritus at The University of Stockholm explains the mathematical problem of the Seven Bridges of Königsberg (now Kaliningrad). 

Problem: There are (were) seven bridges in Köningsberg. Citizens tried to make their Sunday strolls, from home and back, without crossing the same bridge twice. 

Solution: It is not possible.  Read more here.

Many thanks to TheAphid for hosting the Mono Monday Challenge