Tammy McLeod isn't just my teammate on MIT Mystery Hunt's Left Out; she isn't just a sudoku champion; she's also a world record speed jigsaw puzzler. She started a YouTube channel with another speed puzzler, USA national champ, Yvonne Feucht. I'm a jigsaw ignoramus, so a lot of their pilot episode was over my head. I was nevertheless amused, especially with the 1:1 competition that starts at about the 15:30 mark.