Cube Edges: Two Common-Vertex Opposite-Colour Neighbours Each

Problem

Colour all 12 edges of a cube red and blue so that each red edge has a common vertex with exactly two blue edges, and each blue edge has a common vertex with exactly two red edges.

Cube Edges Colouring

red

blue

Click a edge to cycle through colours. Drag the cube to rotate.

Element 0 (BotFront): expected 2 blue neighbour(s), got 0
Element 1 (TopFront): expected 2 blue neighbour(s), got 0
Element 2 (BotBack): expected 2 blue neighbour(s), got 0
Element 3 (TopBack): expected 2 blue neighbour(s), got 0
Element 4 (LftFront): expected 2 blue neighbour(s), got 0
Element 5 (RgtFront): expected 2 blue neighbour(s), got 0
Element 6 (LftBack): expected 2 blue neighbour(s), got 0
Element 7 (RgtBack): expected 2 blue neighbour(s), got 0
Element 8 (LftBot): expected 2 blue neighbour(s), got 0
Element 9 (RgtBot): expected 2 blue neighbour(s), got 0
Element 10 (LftTop): expected 2 blue neighbour(s), got 0
Element 11 (RgtTop): expected 2 blue neighbour(s), got 0

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