Stage 2 of LOGOSGBITS: seven trials in division — what definition becomes once you sort. A good division works on one basis, into boxes that never overlap and leave nothing out. Definition says what a thing is; division says where it sits.
Each trial is locked until you clear the one before it. Every level scores out of 1000 — 600 for accuracy, 400 for speed — so speed alone can't clear the bar; you have to solve most problems, and quickly. Reach 650 to unlock the next.
You can name the nearest kind, test a division for overlap, for gaps and for a hidden second basis, and read off how any two classes sit against each other — which is what tells you, before any argument begins, what follows about their members.