Leonhard Euler (1707 - 1783), a Swiss mathematician, was one of the greatest and most prolific mathematicians of all time. Euler spent much of his working life at the
Academy in Germany, and it was during that
time that he was given the "The Seven Bridges of Königsberg" question
to solve that has become famous.
The city of
the . It was formerly in Pregel River Prussia,
but is now known as Kaliningrad and is in Russia.
Königsberg was situated close to the mouth of the river and had seven bridges
joining the two sides of the river and also an island and a peninsula.
So then; how do you get into Königsberg from
Tula without crossing any