I'm only a fairly pedestrian chess player, but I looked at one of these games between AGZ and SF and aside from the endgame, AGZ played in a manner that almost

I'm only a fairly pedestrian chess player, but I looked at one of these games between AGZ and SF and aside from the endgame, AGZ played in a manner that almost seemed alien. It seemed to completely ignore various little rules of thumb which is to be expected in hindsight but fairly mind-blowing when you actually watch a game.