This is how our Sort 
feature works.
This is how our Sort
feature works.
All pieces match one of the shapes displayed below and are sorted by it's number (1, 2, 3 etc).
| Common Sides | Top out, Right out | Top in, Right out | Top out, Right in | Top in, Right in |
| Bottom out, Left out |  1 |
 2 |
 3 |
 4 |
| Bottom in, Left out |  5 |
 6 |
 7 |
 8 |
| Bottom out, Left in |  9 |
 10 |
 11 |
 12 |
| Bottom in, Left in |  13 |
 14 |
 15 |
 16 |
Some Gamers have developed a descriptive phrase for each piece thus; starting at the top and reading clockwise, they would call Piece No 4 as "in, in, out, out" and piece No 10 as "in, out, out, in".