Lutz jump
The ISU defines the Lutz jump as "a toe-pick assisted jump with an entrance from a back outside edge and landing on the back outside edge of the opposite foot". Skaters tend to go into it with a long, diagonal take-off into one of the corners of the rink. It is a difficult jump because it is counter-rotational, which means that the skater sets it up by twisting in one way and jumping in the other. Many skaters "cheat" the jump because they are not strong enough to maintain the counter-rotational edge, resulting in taking off from the wrong edge. A "cheated" Lutz jump without an outside edge is called a "flutz".