[shawn-butler]

I think the answer will be 'no' as solving a chess problem is a learned skill and not as innate as reading and understanding text and the time delta of comprehension between two similar text passages << time to solve chess problem distributed between users of low and high skill.

[carbocation]

Why would the distribution of user skill differ across test groups? There's no reason it should. The expected time to solve the puzzle itself would be the same across both groups.