Finding the solution (IMAGE) University of Washington Caption Researchers at the University of Washington have found that determining the pattern or rule in a puzzle, like the one above -- from the study -- hinges on the brain's ability to determine what doesn't work, not just on finding the right answer. Credit UW Department of Psychology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.