The Puzzle of the Tube

77 Order 2 Tubominoes

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

Order 2 Puzzle of Tubominoes

You could be better, I'm sure!

Aug 19th, 2001
Alessandro Fogliati finds the solution below of 7 pipes:

Tubominoes solution


First edition: 30 Apr 2000



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