Just watched on 4+1.
Oscar is fabulous. He's just naturally brilliant and a lovely kid with it.
I see a lot of DS1 in Hugo. DS1 has plenty of boundaries, but doesn't like many of them. Hugo needs a few more, but I can't help agreeing with him, a lot of the time. Working memory is the key to intelligence. That doesn't involve memorising a pack of cards, which is incredibly boring and pointless. In computer terms, it simply means you have an effective cache. Glad he got told off for pissing around, though. He should have been taken out of the room.
Catherine is brilliant, too, and I hope that, with every stage of the competition, her mother is eating her words about her son being the really intelligent one.
Shrinidi - naturally brilliant, too. I'm not surprised she aced the card memorising, as she seems to have a visual memory, despite her bookishness.
Longyin and his father seem to work brilliantly as a team. His father does have extreme views about intelligence/childhood/life prospects etc, but he seems to be genuinely motivational, rather than pressuring like that awful chess mom from last week was.
Leo will end up in politics.