I just faced a 6 pool, and you told me to use 4 drones to pick off building spines. But he built the spine in the dark area of my base, and I didn't see it until it was already finished (He picked it up to move it closer). What am I supposed to do then?

I killed his initial 8 lings and the spine, and I had 7 drones vs 5 of his. But he had more lings on the way, and I still lost.

Are you just supposed to check the dark area in your base in every zvz you play? (He was cross on entombed, I didn't see any of the lings he rallied or his scouting drone).