×input a series of moves with the temporal clone that will push the nest to an appropriate place, retreat, push waterskippers onto each of the four plates with present Beethro, then finally push the nest onto the spikes.

But I can't find that appropriate place, nor the spot to retreat to. Even at the end of the southern corridor the nest is closer to the time clone than to present Beethro, so the skippers spawn in the pool instead of into the feeder channel.

×it's bad if too many skippers start to pile up in the left chamber. You won't be able to manipulate the nest from there.

×A better approach is to use the timeclone to push individual skippers across the force arrow. Then it should destroy the nest.

×the timeclone is closer to the skippers than Beethro, so I can only push two over the arrow (one over the arrow, and an other on top of the arrow). If I run into the corridor to gain some distance and get the skippers to be attracted to real Beethro, I can push over a third one, but then I get (or rather, the timeclone gets) overwhelmed by subsequent spawns.

×Remember that stunning the nest prevents it from spawning. You can stun it, retreat down the corridor, then time things so you push the next spawn away and stun the nest again.