I purchased Instant Insanity for my 14 year old grandson's Easter Basket. I remembered having the same game as a kid. He worked on it for quite awhile without solving it. After he put it down several adults in the family had a go at it. My grandson tried to solve it again and was still working on it when the family left for their 45 minute drive home. I told him that if he still couldn't solve it, there was a website with the solution. He said that he wanted to keep working until he solved it.