I'm sorry to say
@Morcar_olmig. I already submitted a 1460AD (turn 206) victory at 100% success. It also could have been a few turns earlier if I had copper and launched it at 80%.
Let me give you all some ideas, pointers and a quick overview.
First of all, getting a free worker is in my opinion absolutely necessary to achieve this. I got it at turn 0. It helps producing the first worker faster and helps you improve your BFC very fast.
Gold, stone and corn in BFC are also necessary.
Gift the AI a lot of techs to give them a chance to research a few techs for you. Every turn counts.
I'm saving my great artist from Music to start the Golden Age 1 turn before I research Rocketry. Taj Mahal is built on the turn when I research Rocketry and the great merchant combined with the great spy from communism are used to create a 3rd consecutive Golden Age. This allows me to build all the spaceship parts in the Golden Age.
This is my last submission for this gauntlet. I don't have the energy anymore to start a new one.
Good luck all!
P.S.
I believe that an inland sea map may give you a better date.