Okay, single-tile deity huge map challenge also is possible ( using strategy from
@ariosto ). Though this time it should be called 'single-tile start', as later we had more, of course.
This time it was huge pangea, 17 opponents, quick and Huayna Capac.
To get Hinduism ( for +5 additional culture) I've chosen 17 opponents that are not cultural and doesn't have mysticism.
I've placed my single-tile peaks near chinese tribes.
But despite of Mao placed Bejing in my 3rd ring, apparently it seems impossible to early flip the capital. Capital pushing borders, and that's why it get +20 culture for every level, so early flipping for it just not possible.
Hinduism + Stonehenge + ToA + Oracle ( for Alphabet ) didn't help.
But luckily Alexander founded Sparta in my 4st ring, and when Sparta had just 1% own culture he gifted it to me.
This happened quite swiftly - T49.
After that this game became pretty similar to a 'normal' deity game except that you have even slower and rougher start than usual ( Only one actual city at T49 on quick... )
By the moment I was ready to settle, there was not much space for a new cities left, so I had to stay with just 4 cities.
I am not a professional deity player, so I thought it is a lose.
Especially after I've lost race to The Great Library.
And then I've lost race to the Music.
But after managing to build Sistine Chapel in Sparta I've got some hope for a cultural victory.
Of course, you can't win cultural victory with 4 cities and two religions. So, I had to find a window to conquer some neighbors - Mao and Alexander were the obvious targets, as because of my cultural pressure they become weaker than other AIs.
In the meantime I've lost race to Liberalism to Mansa... Charles De Gaulle had 5 vassals at T120, so the whole game didn't look good to me.
But after upgrading all riflemen to infantry and eliminating first Mao ( +4 cities ) then Alexander ( +3 cities ) I've got 11 cities and 4 religions. This happened around T165.
Now I could concentrate on Cathedrals and cultural victory.
It was a tough race - Sparta and Tiwanaku became legendary exactly at the same turn that Hammurabi launched his spaceship. This means I've won just by 6 turns advantage. But I've made a lot of mistakes, obviously better player would win faster.