This only describes my experience in their first round of interviews. I haven't yet gone to the second round.

Invited to an interview during a career fair. They met me on campus. Interviewer invited me into the room and explained the die problem to me. They were very friendly people. Don't bother dressing nicely, they don't mind a T-shirt.

It is the same 6-sided die problem as described in other reviews. You must find the shortest path from the die's location on a grid to a marked spot on the grid. You move the die by rolling it over one of its edges. The cost of a move is whatever the die reads after the move.