anybody know who it was who was writing those high iq day-by-day threads back in oct/nov/early dec, where each day was about optimizing smth new?

[chicoishtn]

ik the question is very vague but i have no idea how to go more in depth. there was someone who was posting high effort day-by-day threads (ik for a fact he got up to at least day 25) on different things back in oct/nov/early december. if u have any idea who im talking abt (or just a guess) please link it here

i thought i had it bookmarked but now i cant find it anywhere