This game tanked my diagnostic. I was roaring through these and had 10 full minutes to tackle this and couldn't get it done!
After time was called, I continued to time myself and finished this game at over 16 minutes!!! (ouch) I spent just over 7 minutes on the set up (some of that extra time allowed me to answer question 23 - but after the buzzer)
I found the game to be a monster hybrid of binary grouping and numbered ordering (more of the former than the later)
The two questions, specifically, that gave me trouble were 21 & 22. I think my diagramming was off somewhere, and it took me too long to set this up, perhaps because I was finding inferences as I drew the contraints onto the binary diagram.
Would someone care to give me their approach?