Coding something like that would be pretty hard, plus you still need to find the end portal, and with around 128 strongholds in a world, it would take a really long time to even get to the 12-eye end portal, which would make this category luck based, rather than skill based. Plus, like I said, most of the top runs will likely be cheated, using photoshop or something like that.
You can naturally generate 12 eye seeds (Yes I know not all seeds can be generated) hence I don't really see what the point of this is (the probability of getting a 12 eye seed is the same).
Instead it should be randomly pick a seed from a list of all 12 eye seeds.
@Moonis literally everything u and the op said is not what I said lol. OP said all minecraft seeds, then you and OP both said/hinted at using a program/seed checker to speed up the process. I am saying literally have a list of 12 eye seeds. This would not take a long time (it would take O(1) computation) and would not be hard to code at all as you also said (as long as you have the 12 eye list already which from my knowledge do exist).
I think the idea OP is trying to get at is FSG with a seed bank of every 12-eye seed (including non-randomly generatable ones). This would be around 10 million seeds and you could play "RSG" Peaceful with them. The issue is you wouldn't be able to find the strongholds... you'd have to find an ocean-exposed stronghold and hope it's the one out of the first ring that's filled in. RSG Peaceful 1.9+ just isn't possible without a potential future update.
thats literaly what i said