That's impressive to me. I got 4 on my first go, 6 on my second and I doubt I'll be going much higher without significant practice. I find it extremely hard and made several wrong atttempts in addition to being slow.
Please forgive me for being cynical but it feels like he is boasting especially as he starts talking about intellect then downplaying it.
Just my take but maybe I’m just jealous ! I could only get to 6 shapes.