Blindfold chess? Just search for it on youtube. Most GMs can do this easily. Some simultaneously play 10+ sighted players whilst blindfold. Even when not blindfolded they often look away from the board whilst calculating so that the current state of the board doesn't distract them.
It's not exactly blindfold. With blindfold, the blind player still knows the opponent's moves...They just don't have the luxury of being able to _look_ at the state of the board (although top-tier chess players don't need that luxury).
This is a little different, but I think/speculate they would still have enough heuristic knowledge to crush most people.