What rating separates the experts from the lesser skilled players?
When does someone get the innate feeling that they have reach a close to expert understanding of chess? I'd say when one reaches the ranking of about 1600. To reach this ranking I believe one has to invest not only considerable time, but also money. I am not convinced that reading and training, as well as online play will do the trick. Most likely, one has to participate in over-the-board play and travel. I think a certain staleness can result from internet and local club play. Now don't get me wrong I very much enjoy every aspect of chess! I'm just speculating as to what it takes to really improve one's game. I am very uncertain as to whether or not I will ever reach 1600. However, hope springs eternal!
Good luck to all!