Btw, I just want to make clear: some people do take longer to learn to play blindfold than others. But as long as they are motivated to learn, they can be taught.
I generally like what you say in these forums, @SmyslovF. But...
Consider the following --
1) Massive numbers of regular OTB chess players do not and (seemingly) cannot play blindfold chess.
2) Where is the readily available public information for how this skill can be learned (or taught) ??
I think you get my drift.
P.S. Good to see @Burgerboy has finally changed his username.
You should read Andrew Soltis's "what it takes to become a chess master". Soltis doesn't believe its even "just" calculation, "just" theory, or "just" anything, that holds players back. You should read it and maybe you'll understand what I mean.
Could you give me the link to that, please?
http://www.amazon.com/Takes-Become-Chess-Master-Batsford/dp/1849940266
It's a really good book. No one is better at breaking things down in original ways then soltis. Normally he doesn't mix his "meal books" and "real books", but I'm 90% sure this one is both. Learning how to take command of the priorities on the board got me to 1700 at one point.