BBC News
By Jane Wakefield
image copyrightGetty Images and Matt Ginsberg
image captionMatt Ginsberg was so bad at crosswords he had to build a machine that could make him look better
Matt Ginsberg is good at a lot of things - he is an AI scientist, author, playwright, magician and stunt plane pilot. But he isn't very good at crosswords.
In fact, despite writing them for the New York Times, he says that when they are published, he often cannot solve his own.
So when he was sitting in a hotel ballroom losing yet again in a major US crossword competition, he decided to do something about it.