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― Configuration code: RRmULmUmRvRmDm
- Start from
- Close into a 2x3 rectangle with
- two stacks of two tiles in the East positions
- the South-West tile is of type backslash
- six tiles are located at the first floor, two tiles (East) are located
at the second floor
- Rotate down 180 degrees with a mountain fold the two West tiles, obtaining
a 2x2 square
- Slightly open in 3D with the following hingings
- North-East stack: north side Revert North with South from here on if this is not possible
- South-East stack: east side
- North-West stack: west side
- South-West stack: south side
- mountain fold 180 degrees between the NW and NE tiles
- mountain fold 90 degrees between the NE and SE tiles,
- mountain fold 90 degrees between the SW and SE tiles,
- valley fold 90 degrees between the NW and SW tiles
- End up with a cube having two stacks of two tiles in opposite sides (West and East)
- The flap in the East stack can be rotated 270 degrees against the upper side of the cube
- Reopen by changing the hinging side in the West stack into the final shape