Turn 103 domination victory, out of competition.
Armed with:
- Full map knowledge (I created the map).
- The 'right' strategy whispered to me by @vadalaz : quinqueremes with Discipline (i.e., right-side honor) and Statue of Zeus are formidable against Prince-level cities. At his suggestion I actually altered the map to allow two-boat access to Onondaga and Bejing.
- All of your reports about how your games were going.
- Several attempts to get the game I wanted.
My final approach: Worker first, researching mining. Ruins: 95 gold, Culture, Pottery. I doubted between Liberty and Tradition here. I chose Tradition, but maybe Liberty would have been better because it took too long to get to the good stuff in Tradition. After worker I started on scout, but switched to shrine when I found the Pottery ruin, for early God-King. Since I was not going to build cities, I did not steal from Lhasa, instead waiting for it to target the barb camp, which it finally did (I got Tithe and Religious Community, though by that stage it was irrelevant).
After Pottery I went sailing and then started building and buying (with tribute gold) quinqueremes. In all of my attempts, Oda had been a right thorn in my side. He had the only hill capital, and he also expanded very quickly (to another annoying location, south on a hill against the mountain, which foiled one earlier attempt as I could not sail to Bejing directly from Osaka). So for my final attempt, I went Osaka first with 6 or 7 quincs. Then I sailed back for Iroquois, then to Bejing via Singapore. This CS I did not tribute. Instead, since they had a gold quest, I gave them 500 and later another 250 to sort my happiness.
Knowing Vienna and Palenque did not have two-boat access, I built three chariots and an archer and put them in the water, though even cycling quinqueremes might have worked, especially with an admiral (not sure though). Looking back at my game, I think sub-100 is possible if you go Japan - Austria - Maya, and then a second army for Iroquois and China.
@ForkOfSpite did point that out, so I could have played better. Whether anyone can achieve the sub-100 on a first play without map knowledge is a tall order though.