Straggler wrote on 06/25/14 at 12:28:45:
True, but it doesn't follow that such a person will have any clear idea of what lines would suit him or her. I, for example, have been playing for many years and am around 1800. My general knowledge about the KID is that if you play the best lines (with d5) and don't know the theory you will quickly get mated. So, when I have found myself facing the KID in the past, I have tended to play rubbish like the London or the Barry. I want to start playing respectable lines without having to memorise a huge wad of theory. But my knowledge of the various lines is quite inadequate to enable me to make an informed choice. Call me ignorant if you like, but I don't think I'm unusual in this respect. Actually I seem to know more theory than most of my opponents.
Incidentally I have a particular problem with lines that don't involve an early Nf3: what do you do about 1.d4 d6, or (especially) 1.d4 Nf6 2.c4 d6?
The problem with the KID generally (for White) is that unless you are willing to play something critical (and almost everything is) then you are accepting equality out of the box; that's what the KID is for, after all: trying to get White to commit to come home with his shield, or upon it. So there isn't any remotely challenging variation that doesn't involve some risk.
However, there are certainly less risky lines than the Mar Del Plata; I suggested the Petrosian, but many of the lines with h2-h3 and / or the Averbakh have a similar plan of restraining Black on the kingside rather than inviting him forward. And that probably means less risk of getting mated.
If you want to avoid the locked pawn centers of the KID main lines, the Fianchetto is probably your best bet.