Triangular Super Domino Prism
Java Applet Instructions

The Green Flag resets the puzzle.

Pressing the Spacebar scrambles the puzzle.

Down Arrow turns the bottom eight cubelets by 180 degrees. The
same can be achieved by clicking on the top of the front center triangle.

Right Arrow turns the right eight cubelets by 180 degrees.
The same can be achieved by clicking on the top of the right center triangle.

Left Arrow turns the left eight cubelets by 180 degrees. The
same can be achieved by clicking on the top of the left center triangle.

To turn one of the three corner columns by 180 degrees, click on the top
corner triangle of the upper cubelet.

Pressing a turns the top layer by 120 degrees clockwise.
The same can be achieved by clicking on the leftmost face of this layer.

Pressing y or z turns the top layer by 120 degrees
counterclockwise. The same can be achieved by clicking on the
rightmost face of this layer.

Pressing s turns the bottom layer by 120 degrees clockwise.
The same can be achieved by clicking on the leftmost face of this layer.

Pressing x turns the bootom layer by 120 degrees counterclockwise.
The same can be achieved by clicking on the rightmost face of this layer.

Klicking on the top of one of the central edge triangles turns
the entire edge by 180 degrees.

Pressing q flips the entire prism over by 180 degrees
in the direction back > right.

To solve the prism, you have to get the top side yellow,
the left side blue and the right side red. (The green back and the white
bottom are invisible.) Moreover, the central triangles have to be
correctly oriented, i.e. the coloured tips have to poin to
the correspondingly coloured sides.

When you solve the prism, your time taken is displayed
for 5 seconds.
Notation

There are two layers, the upper layer and the bottom layer.

In each layer there are three corner cubelets (front  right  left),
three edge cubelets (left  right  back), and three central cubelets
(front  right  left).

U means turning the top layer by 120 degrees clockwise
(when viewed from above)

U' means turning the top layer by 120 degrees counterclockwise
(when viewed from above)

D means turning the bottom layer by 120 degrees clockwise
(when viewed from above)

D' means turning the bottom layer by 120 degrees counterclockwise
(when viewed from above)

F means turning the part of the prism consisting of the
front eight cubelets by 180 degrees

R means turning the part of the prism consisting of the
rightmost eight cubelets by 180 degrees

L means turning the part of the prism consisting of the
leftmost eight cubelets by 180 degrees

f means turning the front column of the prism consisting of
two cubelets by 180 degrees

r means turning the rightmost column of the prism consisting of
two cubelets by 180 degrees

l means turning the leftmost column of the prism consisting of
two cubelets by 180 degrees
Solution Strategy

For all steps except for the orientation of the central triangles
we can follow the strategy used for the normal Triangular Domino Cube.

To get the orientation of the center triangles right, it is advisable
to put them into the correct positions in the very first phase.
The further steps of the solution process will not destroy the
orientation.

Interesting things can happen here. For instance, it is possible
that exactly two of the top center triangles are interchanged.
I do not know a simple algorithm to correct this directly.

Any useful algorithms and shortcuts are welcome. Please tell me
about your discoveries!