JaiDeepBlue comments on my Cifuentes-Zvjaginsev post:
A great game with a queen sacrfice and a king-hunt, if I remember. It was adjudged the "Best Game" in the Informator of that period.
Blogmaster, perhaps you can analyze why talents like Zvjaginsev do not make it to the super-elite.
At last, an easy question! Here's the answer - pick one or more of the following:
1. He's less talented than those players.
2. He hasn't worked as hard as those players on one or more aspects of his game.
3. He hasn't had the opportunities they have.
4. His competitive character isn't as well-developed.
I know this is a rather flippant answer, but I don't think the situation is any different than why one high school student becomes a 1900 while his best friend only makes it to 1750.
Maybe I'm misunderstanding your question, though. Maybe you're asking this:
Zvjaginsev had an enormous rating as a teenager - he hit 2600 just before his 19th birthday - so why didn't he keep pace with those in the super-GM category?
I have two answers.
First, I think 1-4 above still apply. Some people reach their maximum potential (or at least a plateau extremely difficult to transcend) sooner than others: getting to 2600 first doesn't guarantee getting to 2700 first! (As they say, past performance is no guarantee of future results.)
Second, Zvjaginsev didn't fail to keep pace with those in the super-GM category, because (generally speaking) he wasn't even with them in the first place. His mark is 2600 at 19; let's compare this with the world's current top 10.
Kasparov: He comes from a different era, of course, but even so: his first rating as a 19-year old (in 1982) was 2675, which put him at #2 in the world.
Topalov: 2640 (1994).
Anand: 2555 (1988) - but he had almost no opportunity to play outside of India until the year after.
Svidler: 2635 (1995).
Aronian: 2562 (2001).
Kramnik: 2725 (1994).
Leko: 2668 (1998).
Ivanchuk: 2625 (1988).
Gelfand: 2510 (1987) - but with few opportunities to play outside the Soviet Union, which artificially deflated his rating.
Ponomariov: 2743 (2002).
Thus with the exception of Levon Aronian and two players with artificially low ratings, Zvjaginsev's mark of 2600 at 19, while extremely impressive, lags behind his colleagues at the top of the food chain. It's not a big deficit - 34 points if we count everyone; 59 if we exclude Anand and Gelfand - but add those points to Zvjaginsev's current rating and he's right up there (2698 or 2723).
I don't know if I've answered your question, but I tried! If I missed, please write in and set me straight, and we'll do it all over again.