a mathematical problem in graph theory, solved by Leonhard Euler, to show that it is impossible to cross all seven bridges of the Prussian city of Königsberg in a continuous path without recrossing any bridge.
KÖNIGSBERG BRIDGE PROBLEM
Meaning of KÖNIGSBERG BRIDGE PROBLEM in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012