Settled 1 NW on the silk as hovering over it (and what the scout revealed) proved that there was a river there (fresh water). Turned out to be a good move; only good tiles and a 2 commerce center to compensate for the lost turn.
My scout is running around and I meet Kublai Khan. He's one of my least favourite AIs to rush, but hopefully the UU will compensate. I was still a little dubious, but when I scouted his kick-ass capital and seeing it wasn't on a hill I decided to go for it.
At 3000 BC I've scouted the island but I still know we're not alone with Kublai. I've had more espionage points on him from time to time, which proves he's met someone else. I plan to chop out a work boat as soon as possible in my next city.
I settled for the eastern horse, the other one was too risky even if the city would be better. Barbs would pose a serious problem.
Here, on the other hand, I have an easy time fogbusting. As you can see Kublai founded Hinduism which is a little unlucky for me as the rest of the world won't have as much tension and I have to deal with a hill city with a lot of culture (Beshbalik).
I settled 3 cities before the rush as they all were safe and sound from barbarians and had a lot of forests to chop. Kublai completed the Great Wall ~1400 BC and ~1200 BC he pulls off another wonder, the Great Lighthouse, sweet! You win some you lose some, my earlier bad luck is balanced out.
It's also worth noticing that I skipped pottery and cottages for this rush. They're usually a good bet, but as I knew there would be an "overseas" AI I went for trade routes instead as a source of income. The cottages are usually just emergency cash to avoid strikes, but not necessary if you get 3 commerce trade routes.
I attack at 1000 BC as he has a settler headed out for another city. In the year of 975 BC we attack the capital and run into some more bad luck (note; it has 2 archers and 1 chariot).
- UU loses to archer
- UU loses to archer
- UU loses to archer
- UU loses to archer
- UU loses to chariot
*sigh* The last 3 were >70%. Fortunately I had another immortal waiting and 3 more 1 turn away so I killed the chariot and the rest of the archers the next turn, but it was still quite a scare, good thing I brought extra units.
Anyway, Karakorum is captured 950 BC and Turfan the southern city soon after. I chose to keep Turfan too as it's coastal and because the stone was improved already (thought I'd give the Mids a go as there didn't seem to be any industrious AIs around).
I take Beshbalik at 825 BC and the Mongols are no more. Captured a lot of workers, got like 9 running around. I spent the cash gained rushing through mysticism -> masonry -> polytheism -> aesthetics and just started on literature at 500 BC. I've also completed the Pyramids, so the game is in good shape. Will settle my next city to claim the marble and construct the Parthenon and the GL.
)
I took a big gamble heading into the Kahn's domain so early (~1500bc) -- if I was unable to take his capital a long, slow pillage war would have set me back a long ways. Still, I'm convinced that Immortal rushes are extremely dependent on speed (with copper up north, this game would have been ... interesting).
Something she will have cause to regret. 
Workshops are really good with chemistry and guilds, no need to draft to get a big army quick. It was a lot of fun to use ships more again too. I really like fractal maps, they let you play the entire game and face different situations depending on the map unlike for instance continents where you can copy your games and get approximately the same results every time.
