Okay, here is the save.
http://gotm.civfanatics.net/saves/sgotm7/jeffelammar_SG007_BC3000_01.SAV
Turn 0: Set research to the wheel at max, settled and started a spearman, sent the worker NE
Turn 1: worker irrigates
Turn 4: Zulu appear to the east, northeast of the oysters. They have 35 g, pottery and warrior code. I trade masonry and bronzeworking for pottery, WC, and 12 g, then I declare war. Worker roads.
Turn 6: Worker goes northwest.
Finish spear, start new one.
Turn 7: Fortify spear. Worker irrigates.
Turn 10: Expansion shows olives on hill to south. Worker roads.
Finish spear, start settler.
Turn 11: Spear goes south.
Turn 12: Zulu have alphabet and ceremonial burial. Spear goes south, sees incense. Worker goes S, S.
Turn 13: Worker roads. Spear goes SW to olive hill. Goats to south and west.
Turn 14: Size 3, so lux to 10%. Spear goes S, sees floodplain wheat, hut to west.
Turn 15: Zulu have the wheel. Spear goes E, sees spices. Worker goes SE.
Finish settler, start colossus. Zulu start colossus.
Turn 16: Science to 100%. Worker roads. Settler goes S, S. Spear goes N.
Turn 17: India shows up to north. They have alphabet and ceremonial burial, but won't trade alphabet. Trade masonry for ceremonial burial and 33 g, then declare war. Spear fortifies, settler goes SE by river.
Turn 18: Worker irrigates. Build Edrine, start spearman.
Barb warrior appears from west.
Do nothing on other turns.
I don't know that we should try for colossus, but the only thing that would finish before the end of these turns was a warrior, so I left it there for us to discuss. Edrine doesn't have a lot of food, but there is lots to the southwest. The Zulu have started the colossus, so it doesn't look great for getting it.
We haven't seen any units nearby, so it is possible that both the Zulu and the Indians are on different islands.
Here is a screen shot of our situation now.