When you can become a Chess Expert through Subliminal Messaging!
At least that is the claim I saw from a product being sold on EBay. This wonderful product will help you concerntrate for longer and even allow you to "Develop the ability to be able to strategize and plan your game several moves in advance without making mistakes."
The genius* of this product is through it's delivery method. You get three 10 minute tracks of relaxing ocean/waterfall sounds and a 4th track of complete silence. Embedded in those tracks are subliminal messages that will make you a chess expert.
(* The genius is that there is no way of verifying what the subliminal messages actually are)
If you want to find out more about this product go to ebay and search for "CHESS Expert" or subliminal. But no, I'm not providing a direct link because I think it's a load of horse manure.
In fact it reminds of an old soccer joke where a player is concussed just before half time in an English Division 2 game. "He doesn't even know who he is" says the trainer. "Good" says the manager,"tell him he's George Best and get him back out there".