How do people normally block the Ai from building towards them? Every game I play the AI builds towards me first. Am I supposed to build my second and maybe 3rd cities right next to the Ai even if its 10 tiles away or more? A lot of the time I am only able to get 5 or 6 cities and the Ai has 7 8 or 9 cities. And they are usually to far away for an early rush.
I like blocking AIs out of my future territory. That ensures that I get to 8-9 cities around Lib. Of course, you need some good circumstances for a block:
1, Being creative!
[ 1a, or having stonehenge (not advised) or a religion (comes late, depends on luck) ]
2, Narrow path: The path the AI has to settle through is narrow and will be under your culture with just 1 border pop (1 city block)
3, Strong Capital, strong 2nd city: If you intend a multiple city block you need a very strong start and a very strong 2nd city to assist your capital immediately. Optimally, this 2nd city is part of your blockade ring.
So, wet river corn 2x + plains cow + river side green hill makes a very strong settler pump. Ideal 2nd city should be something with good food + jewelry or good food + metal.
4, Not going broke: At some point you will need some commerce. Ideally, either your 2nd city or your capital has jewelry or cottage potential. That way you can fund your expansions. Financial helps a lot in this case. Organized is also pretty good.
5, You have a good early unit and won't die to barbs doing that: Chechua! Or any resource unit, really. Chariot prefered.
6, Against aggros: I want a front hill city for those. Placed in a way that in case they go for war they go for that city for sure.
7, Against wonder squieshies: no aggressive blocks into cities that might be popping the oracle in 5 turns. Keep that in mind or you get screwed, even with creative.
If the block is solid, you are going to have a lot of time to backfill your land. You can't expand as quickly as the AI anyways, so you need the time. Around Lib, instead of having your usual 6-7 cities you have some more. Then you can use those to conquer one neighbour or the world.