The only IQ estimates I accept as legitimate come from kenpo.  And since I don't come on here very often, I post whenever I get around to it. But thanks at any rate, o bearded one, for reminding me of the following:

Judit Polar has something in common w/all players on chess. com ,she will never rise to the level of a Magus Carlsen. Sorry, but true.

What's is Magnus Carlsen's IQ?

Magnus Carlsen's IQ is a score derived from one of several standardized tests designed to test his intelligence.

Examples of standardized IQ tests include the Stanford-Binet, the Wechsler Intelligence Scale, and the Andy Kaufman Assessment Battery for Children.

"What's is Magnus Carlsen's IQ ?"

Isn't there a redundant s in the sentence ?

I am waiting for the AndyClifton test ...

Congratulations!  You've just made genius! 

Thank you. I feel like a muppet now ...

Uncle Lars, is that you?!  I see you've put on hair.

It is the straw growing out of my head. Not easy to get rid of, my nephew.

Kasparov's IQ was measured on the European version of the IQ tests.

These tests have a standard deviation of 15 and thus a lower variance than the american version of the IQ test. Kasparovs IQ would translate to about 146 on the american scale (standard deviation 20).

Ah, at last we have achieved verifiativity!

i always surspected we was stupider.

That's factually incorrect and...silly.

On the plus side, deviation has now apparently become standard!

No , look it up. American IQ-Bell-Curve has greater variance/std. deviation.

Kasparov is > 2 std. deviations from the mean.

Here is a reference from another Forum:

Correct: IQ values have a mean of 100 and standard deviation of 15. Two Standard deviations above (130) is the boundary to giftedness.

Eventhough IQ Tests are the most reliable tests (Cronbach's alpha, Re-Test Reliability etc) psychology have to offer (r > .9), they are still not 100% accurate. A test value of 135 means something like: the true IQ value lies with a 95% certainty between 127 and 143.

Another problem with high IQ values and tests is. Most standard IQ tests get a problem discriminating between testees with very high values. So that's one of the reason why I advise to be suspicious if somebody tries to tell you person xy had an IQ > 160. The reason is quite simple. The IQ follows a normal distribution (with a mean of 100 and a standard deviation of 15 s. above). The upper 2% have an IQ > 130 (two standard deviations). Now how many people have an IQ of 160+ (4 Standarddeviations). Now try to get enough testees to construct a test and actually make a normation with them. A lot of standard IQ test simply hit a ceiling effect. I am not saying persons with a "true IQ value" of likesay 200 do not exist. You just get a problem finding a good test that can tell you the difference between 160 and 200. Whether that difference actually matters in everyday's life is also a whole different question.

Aha, I see!  So it's actually factually correct and silly!

That's irrelevant and common knowledge. Where's the standard deviation of 20 part? European IQ version test part? Actually, there's no way around this being silly.

http://www.iqtestexperts.com/iq-scores.php

fyi

In this article a standard deviation of 24 is mentioned in contrast to the Stanford-Binet scale (std. 15).

There is also another scale which uses std. 20.

In order to being able to compare the different IQ you have to adjust for the different scales.

it is almost impossible to score as high as 180 on a Stanford-Binet scale. On the other hand the values smaller than 100 will also be less extreme.

Ah yes!  The latest copy of the Poindexter Report.