Puzzle for enthusiasts and beginners, one player, 7 years old and more :
-Find three ways to revert Flexatube and switch the colors.
-10 minutes to find one solution. Some hours to find the three. one bonus open problem.
-Challenge 3D vision and episodic memory. good topology initiation.
-Not to be used with strength. Need some fair play to respect natural fold.
Flexatube is famous A.H. Stone find described in many books and scientific revues including the French “Jeux et Stratégies” where we discover it during early 80’s.
However, as far as we know nobody ever made it a product. It’s now done and one can put a Flexatube in any hand without boring scissor and tape work and with no fear to see that work destroyed by compulsive annoyance it often cause or discreet try to come back in origin state without anybody notice you are lost.
Goal of the game:
Flexatube is a puzzle where the goal is to put the inside outside and vice versa without changing its topologic characteristics.
Textile band with embrodied ornament filled with rigid triangles to avoid folding other were than alon the seams.
9 x 5 x 0.7 cm
Poids net 70 g
Invented in 1936 by the young A.H. Stone while still student it has been popularized by Martin Gardner in math recreation column of “Scientific America” . We contracted right to produce Flexatubes with A.H.Stone son .
Flexatube is nice to handle, sometimes little confusing but not too difficult to solve. However find the 3 known methods to invert his colors is significantly more difficult when find a fourth method or prove there is no other method is still an open problem.
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