effect of spy in one's own city

clif9710

clif9710

Warlord
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The manual I have says that spies can see enemy spies. So, if I leave a spy in my own city, it should reveal an enemy spy, right?

Does placing a spy in my own city add any other protection? Would it make it more likely the AI would detect an enemy spy and out him?

I know that there is a building that will increase city protection - intelligence agency, I think.
 
intelligence agency doesn't add protection vs spies (aside the enormous boost of total EP generated). Having a spy in the city (or any other tile) increases the odds of catching enemy spies on that particular tile
The Security Bureau does the same and increases the cost of spy operations.
 
bestsss said:
intelligence agency doesn't add protection vs spies (aside the enormous boost of total EP generated). Having a spy in the city (or any other tile) increases the odds of catching enemy spies on that particular tile
The Security Bureau does the same and increases the cost of spy operations.
Click to expand...

Having a spy stationed in your city provides maximum protection from enemy spies.
Having a Security Bureau in your city also provides maximum protection from enemy spies.
The two effects do not stack.

One spy or Security Bureau per city, therefore, will give you as much protection against enemy spies as possible.
 
Does anyone know if a spy in a city provides any protection to the surrounding infrastructure or do you need a spy on the tile you are trying to protect?
 
MaximumPain said:
Does anyone know if a spy in a city provides any protection to the surrounding infrastructure or do you need a spy on the tile you are trying to protect?
Click to expand...

I've learned to put spies on resources that the enemy typically targets. In one game the AI was doing a good job of shutting down both of my iron mines. I put spies on them and they stopped. Well...they went and attacked something else. LOL:lol:

One of the guides I've read here talked about stringing spies across a border to increase the chance of their discovery and prevent their crossings.
 
JustOneMoreTurn said:
I've learned to put spies on resources that the enemy typically targets. In one game the AI was doing a good job of shutting down both of my iron mines. I put spies on them and they stopped. Well...they went and attacked something else. LOL:lol:

One of the guides I've read here talked about stringing spies across a border to increase the chance of their discovery and prevent their crossings.
Click to expand...

Thanks for the reply. Its hard to tell what works with spies. In the WW2 scenario in BTS I had to put spies on my oil wells as Germany (and 3 flack and a crew of workers :lol:) just to keep the allies from killing them but it never worked 100% and I always wondered if it had any effect at all.
 
Something I have always been curious about is if having more than one spy in a city helps any.
 
Ramesses said:
One spy or Security Bureau per city, therefore, will give you as much protection against enemy spies as possible.
Click to expand...

Defending spies do not increase the cost of operations.

JustOneMoreTurn said:
One of the guides I've read here talked about stringing spies across a border to increase the chance of their discovery and prevent their crossings.
Click to expand...
Moving to a tile w/ a defending spy increases the odds of being caught, so does staying on a tile w/ a spies.

MaximumPain said:
Does anyone know if a spy in a city provides any protection to the surrounding infrastructure or do you need a spy on the tile you are trying to protect?
Click to expand...
No, it's tile based, it doesn't matter if it's a city or any other tile. But only the tile a spies is present.
 
All of this makes it sound like you would need dozens of spies to fully protect against the AI running missions against you. Do people do this?!? I tend to build 1 spy for each border city, and maybe 1 or 2 more for my capital and most important production city, and that's it.

-Sinc
 
Llast game I played, a spy destroyed a part of my spaceship from a city which hadn't even built a part of my spaceship...
What's up with that?
 
kochman said:
Llast game I played, a spy destroyed a part of my spaceship from a city which hadn't even built a part of my spaceship...
What's up with that?
Click to expand...
A spaceship is a project, which is a civ-wide thing. So I suppose an SS part under construction can be destroyed in any city which is part of a civ which is building that part. Rather silly, but that's how it works. It means, of course, that to avoid this risk you need to detect any opponents who might be able to afford such a sabotage mission in any of your cities and take the strongest possible countermeasures.
The ultimate in counterespionage would be (a) perform counterespionage missions against every opponent, (b) build a SecBu in every one of your cities, and (c) station a Spy on every tile in your territory except in your cities. And even that would not guarantee complete security. It would also take much time and much cost.
 
That is basically true. In theory you could pack all your borders with spies, but in a practical sense only if you have very small borders, or some kind of bottleneck. I tried it once, had about 50 spies, stopped it for a while but then they apparently snuck some in by ship. Anymore I usually just play with espionage turned off, too much of a pain on large/huge maps.

Sincro said:
All of this makes it sound like you would need dozens of spies to fully protect against the AI running missions against you. Do people do this?!? I tend to build 1 spy for each border city, and maybe 1 or 2 more for my capital and most important production city, and that's it.

-Sinc
Click to expand...
 
Bushface said:
A spaceship is a project, which is a civ-wide thing. So I suppose an SS part under construction can be destroyed in any city which is part of a civ which is building that part. Rather silly, but that's how it works. It means, of course, that to avoid this risk you need to detect any opponents who might be able to afford such a sabotage mission in any of your cities and take the strongest possible countermeasures.
The ultimate in counterespionage would be (a) perform counterespionage missions against every opponent, (b) build a SecBu in every one of your cities, and (c) station a Spy on every tile in your territory except in your cities. And even that would not guarantee complete security. It would also take much time and much cost.
Click to expand...

But it wasn't under construction, this part. It was the docking bay, and it was completed in another city (Antium), but destroyed in Thebes (captured many moons previously).
 
Sincro said:
All of this makes it sound like you would need dozens of spies to fully protect against the AI running missions against you. Do people do this?!? I tend to build 1 spy for each border city, and maybe 1 or 2 more for my capital and most important production city, and that's it.

-Sinc
Click to expand...

I never build that many spies, maybe a half-dozen at most, and rely on espionage points for the rest. You can also run counter-espionage against Civs that build up large espionage point reserves, which will temporarily double the cost of their missions in your territory. That's a really good option and ranks pretty cheaply compared to other espionage missions.
 
How do you pick which cities you target to preform counter espionage? I've always targeted cities closest to my borders and their top 3 largest cities. I don't know if that's correct though, especially with larger empires as it becomes too time consuming to constantly be performing counter espionage.
 
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