Can you properly detect a nuclear bom that has been dropped at a specific location?
I use
if: "bring at least 1 nuclear missile to location X"
then: "display message"
but this is not always detected.

"but this is not always detected" he??
maybe you forgot preverse trigger. Nuclear missles can be detected with brings... should work.

God, Devourer, please write preserve. preverse always makes me think of perverts.

You can detect nukes within silos with the at least condition.
You can detect the absense of nukes in silos ONLY with the exactly 0 condition.
You can detect nukes lifting off with the at least condition.
You can NOT detect nukes when they are off screeen. (Maybe with commands, didn't try)
You can detect falling nukes with the at least condition.

If any of these fails, please give more details.

"You can detect falling nukes with the at least condition."
yeah its this one. a falling nuke which is only sometimes detected. i did use preserve trigger.
i used: "player brings at least 1 nuclear missile to location x"
action: "display message"

The nuke falls very fast, so when the location is too small and/or you're not using hypertriggers you might miss the point where the nuke flies through the location.

that might be the problem. I avoid hypertriggers though.

Haha, yes then that is definitely the problem.

You should get in the habit of adding hyper triggers to all your maps, unless you need very precise timing. You can easily use Death Count waits instead of normal waits, which avoid wait blocks.

How come you can't use "Player x suffers x deaths of Nuclear Missile" to detect it? Does the nuclear missile not die?

It isn't killed by units.
Just like you don't detect scourge or infested deaths when they suicide.

I already made the map six months ago.

Like anyone knows of any maps you make.