Check out Danny's live sessions. This guy can't hold a candle to the speed of Danny's calculations.
Yes, and then you ask a GM why he played 0-0 in this position, and he will tell you :
"- well it's a normal move...
- and, Mr. GM if ...d5, there is Nb5, right ? says the student
- yes, there's Nb5, see, 0-0 is the normal move..." 
So is it the tactical training that brings this ability about, or is the sheer volume of games played, or a combination of both??
Both will help.
That's what I like about this site, you always come away learning something!!!!!
Thanks!!!
I totally agree that the tactics trainer and chess mentor are excellent to help extend how far ahead you can see. There is another thing has helped me, that some refer to as a crutch. Though I agree to it being a crutch in a certain regard, I calculate my openings instead of using books to compensate.
I use the analysis feature in online games. It has caused me to look a few moves further ahead most often. I have found myself looking 10 ply in certain positions. The key to it is "certain positions". It is simple to calculate lines with a few force moves, or where it is minor and or major pieces at stake. When it is a king and pawn end game, and only one minor piece on both sides, especially B vs N, it can be much harder to see that far ahead.
In fact, due to this I would love to hear any helpful suggestions for how to calculate these types of positions. I realize pattern recognition is key, but how to memorize that many end game positions ? That seems like daunting task...
Great analysis is the reason 11 year old kids beat middle-aged men who have read 100+ chess books. I think many chess players don't work hard to be become great analysts. It's the main thing I've been working on to become a strong player and it's really starting to click.
Obviously tactics help this ability and what's also helped me is lots of slow chess. I play twice a week at the Las Vegas Chess Club (Game 90 with a five second delay) and I have now participated in two OTB tournaments.
Practice, practice, practice.
Great advice!!! I know how to work on tactics, but just how does one go about being a great analysist?
How interesting!