There are several serious games of Scrabble going on in Addison today, and thousands of dollars are on the line.
Since Saturday, 400 players have been competing in the National Scrabble Championship at the Hotel InterContinental.
If you think it's just a bunch of people playing Scrabble like you do in your living room, think again.
"Some of these people have memorized the entire Scrabble dictionary -- that's about 125,000 words. This is definitely very intense," said John D. Williams Jr., executive director of the National Scrabble Association. "They know all the trick words, the Q words with no U, the Z words."
So what are the keys to success?
"To be a Scrabble champion, you have to have a great memory, you have to have learned -- I would say -- at least three quarters of the over 100,000 words, you have to have a will to win, you have to have confidence in yourself that you can do it, and you have to keep at it -- basically perserverance," said Joe Edley, three-time Scrabble champion.
The final round will be held on Wednesday.
The winner gets $10,000 and will advance to the 2010 World Players Championship games, also at the Hotel InterContinental, next weekend.
"This is a mental sport; people who like using their brain, Scrabble is one of the best ways to do it," said Edley.