Designed and sold by David Litwin, 2012.
(laser cut plastic and stainless steel screws, 5.5" tip to tip, 3/4" thick)
This puzzle is beautifully custom made from layers of laser cut plastic.
It is a successor to the
and like that puzzle:
Here are photos of each of the three plungers moving
(and for each, the plunger can also move in the opposite direction):
that moves horizontally is crossed by
The plungers can be moved to rearrange the red tiles in the center through which a pattern of 4 circles can be seen;
it helps to do this under a light so the pattern is easier to see:
Rotations of the triangles to mix up the tiles; then restore the pattern.
Fun to use and harder than it looks at first.