This is the victory condition I can't ever achieve. The problem is that I win some other victory before I get there. Basically because by the time I am that far down the tech tree with enough production to build the ship I am likely winning a domination or diplomatic victory or a cultural victory.
I thought I had it the other day but I had built too many wonders and my specialist city generated too many great people so I got an unwanted cultural victory. I tried playing through anyway but once you have any victory you can't build the ship.
I wouldn't say I am playing below my level. I play immortal and I do lose a fair number of games. But I tend to win/lose before getting to the far end of the tech tree, meaning that by the time I can start building the ship I am either the 800 pound gorilla, or WAAAAAY behind with little hope.
Anyway, without just going in and shutting off cultural and diplomatic conditions, how???
My usual strategy is to make my capital city a powerhouse and opportunistically knock off any nearby AI if I can get enough units to do it without sacrificing building out my capital. Settle nearby only if there arw great spots. So I usually have around 3 or 4 great cities either settled or captured from the AI.
Then I go tradition, take policies from patronage while waiting for rationalism to open up. Then freedom or sometimes order. The cultural victories come from having loads of specialists and if I have a good production capital usually pick up some wonders. The cultural victories are too easy with patronage maybe, and I tend to put my spies in city states. With freedom you gain influence just by having trade routes and if you are leading they get in awe of you.
Is there a strategy that would work better for science?