The player is faced with an array of numbered dots and connects them with segments.

How to play

• Draw lines between points to create triangles.
• Connect vertices to create triangles and assemble an image.
• The number on a vertex shows its remaining connections.
• Triangles will fill in if they are correct.
• Double tap a vertex to clear its connections.

I should add that the finished puzzle is a connected network of triangles and every segment is part of a triangle.

Question: is a solvable Vertex puzzle guaranteed to have a unique solution?

2   2   *---*   *   *
         \ /    |\ /|
  4       *     | * |
         / \    |/ \|
2   2   *---*   *   *