Amateurs vs World Champions
Often people who don't play chess do not have a clear idea how strong the best players are and what it actually means to play against them. What is the difference in quality of these two groups?
The site www.goldchess.com conducted an experiment some time ago by taking the games from the WCh match Anand-Gelfand from 2012 and gave them to their readers to play out against their computer. The approximate level, around 1800-2000. So you have more or less a difference of almost 1000 points.
The result? See for yourself - http://www.alexcolovic.com/2016/09/goldchess-on-anand-gelfandwch-2012.html