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Σ-Graph
Label all vertices of the graph with numbers so that for each vertex the sum of numbers on its adjacent vertices is the same.
Show Rules
You are given a graph with n vertices. Label each vertex with a number.
All numbers should be distinct and from 1 to n inclusive.
To mark a vertex, click on it as many times as you need.
To make it easier for you, one vertex will be pre-marked and the target sum will be written under the graph.
Please contact us if you have any suggestions. Help us to make the game more interesting, easier, or even harder!
Required sum: 18