<ul>
<li>Start from the flat "boomerang" shape RRURDLDU
<li>Turn it upside-down
<li>Rotate it with the missing corner in the north-west position and with the south-east
tile of "slash" type
<li>For future reference number the tiles from 1 to 8 as follows:
 <ul>
 <li>tile 1 is the SE (south-east) tile
 <li>number the remaining tiles by traversing clockwise the sequence of adjacent tiles, i.e.
 <li>tiles 2 and 3 are the other two south tiles;
 <li>tile 4 is north of tile 3
 <li>tile 5 is the central tile of the boomerang shape
 <li>tiles 6 and 7 are the two northern tiles (from left to right)
 <li>tile 8 is north of tile 1.
 </ul>
<li>Fold the shape with valley folds between tiles 7 and 8 and between tiles 5 and 6: tiles
6 and 7 are turned 180 degrees up and south
<li>Fold tiles 1, 2, 3 180 degrees down and north (below the other tiles)
<li>The resulting shape is a flat 1 x 3 sequence of stacked tiles.
<li>Change the hinging side between tiles 1 and 8
<li>Reopen in 3D into the final shape
</ul>