Your scenario is BS. Problem is that chessmasters are the ones who win. A Chessmaster overthinking is out of the question. When playing chess there is a clock so thinking is less important than proven reacting. Besides have you ever been out in the snow during a storm? Can't see anything.
Chessmasters can quite clearly overthink. They can take something simple and make it more complex than it needs to be. You seem to be saying that chessmasters don't make mistakes or strategic errors. That's clearly nonfactual.
Also, this was a fight between Canadians and Russians. Just because it took place in the Arctic during a winter snowstorm doesn't mean that we weren't all out in t-shirts and shorts and had no problem finding our way around. Boy, are you Yanks lucky they didn't get past us, though, because I've been in Atlanta when a couple of snowflakes dropped and you'd have thought there was a zombie outbreak by the panic going on.