Savant is a particularly gifted individual with some kind of disabilility. It occurs in autism. Kids who can draw complex scenes from memory etc.
ASC - autistic spectrum condition is different. Aspergers is a form of autism. You wouldn't notice someone with aspergers as particularly different to anyone else; they are high functioning individuals who are not always the best socially, but have a marked attention to detail. They also don't follow the crowd. Because of these triats those with aspergers can be inventors, highly successful biz people, programmers, work in fianance etc etc. At the other end of the spectrum are non-verbal people with autism who struggle to communicate at all.
Chess GMs will tell you, they are defo 'on the spectrum'. As are many techie nerd types.
To focus on the 'objects' of the chess board fits an austistic mind, that can be less inclined to focus on people; and chess at the top level needs to be an obsession. ASC is often associated with having a fixation e.g. for every fact about the Titanic etc.
When I had some time I let myself go into chess, to have a taste of what that is like. I spent one or two solid days immersed in the board. Let it be the world you are focused on. Not something I've done again since. You can see why Bobby Fisher went stark raving bonkers! You need to compliment the intensity with some walks in nature of something.
The best players start young (5 or 6), have a love for the game, exceptional memories, especially spacial memory - to see and recall possitional patterns.