The Puzzle of the Tube
They are squares (or triangles or hexagons, "complex" Polysexes).
Each edge has zero or one or two (or more) flanges.
Inside the piece the flanges are joined one to one by a pipe.
The purpose of the game is to compose the puzzle with the minimum number of pipes.
Solution with 12 pipes
You could be better, I'm sure!
Aug 19th, 2001
Alessandro Fogliati finds the solution below of 7 pipes:
First edition: 30 Apr 2000
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