Rubik's Tangle 3x3
a.k.a. Rubik's Mini Tangle
Circa 1990, this one by J. A. Storer 2007 from a Rubik's Tangle 5x5.
(nine 2" cardboard squares in a 2.75 by 4 by 3/4 inch plastic box)
Arrange 9 squares in a 3x3 array so that edges match.
Each square has the same pattern of 4 tangled ropes that has two connections on each edge.
Different squares have a different combination of the four colors (red, green, blue, and yellow).
Jaap's Page
indicates that this puzzle may have been produced as a give-away to promote the
Rubik's Tangle 5x5
puzzle.
The puzzle pictured here was made by using squares from a Rubik's Tangle 5x5.
It's solution is the upper left 3x3 portion of the first solution to Version 1:
Further reading:
Jaap's Page,
from: http://www.jaapsch.net/puzzles
Thurston Patent,
from: www.uspto.gov - patent no. 487,798
Rankin Patent,
from: www.uspto.gov - patent no. 606,338