Restarted 2x..dont know what stumped me on this but finally done.
Black snake slowly emerging from the kitchen baseboard and I still completed an Expert! Ta-dah! (Well, I did use Greens ...but under the circumstances I've forgiven myself.) I hate snakes!) (Animal Control says that they can't pull it out until it completely emerges - lucky me)
Done with greens
No green, no guess. I found a clever way to exploit a unique pair situation, both ends at once.