The following figure shows the rivers and bridges of Königsberg. Residents of the city occupied themselves by trying to find a walking path through the
city that began and ended at the same place and crossed every bridge
exactly once.
If you were a resident of Königsberg, where would you start your walk and
what path would you choose? Draw your route on the image below.
Bridges of Königsberg
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2003 Encyclopaedia Britannica, Inc.