I think the cut and dry proof for the flood account would come from accounts of the flood from other civilizations. What did the Egyptians say of it? How about the Yao Dynasty of China? There were other civilizations too, but none of these civilizations seem to have noticed.
Anyway, to add a couple for Apostle:
1)Jehoiachin’s Age
(2 CHR 36:9) Jehoiachin was 8 years old when he began his reign
(2 KNGS 24:8) Jehoiachin was 18 years old when he began his reign
2)1,700 or 7,000 Horsemen
(2 Samuel 8:4, 1 Chronicles 18:4) Samuel says that David captured 1,700 horsemen and Chronicles says he captured 7,000 in the exact same battle.
3)40,000 or 4,000 stalls
(1 Kings 4:26, 2 Chronicles 9:25) Kings says that Solomon had 40,000 stalls and Chronicles says he had 4,000 stalls.
Here are 3 errors that there are no way around, except to admit that an error was made in the writting/organization of the Bible. Someone made mistakes here, either the "God inspired original writters" or the "God inspired organizers/redactors". You pick!