Weird rules on splits, house edge changes?

Another curiosity is I've come across a game that has some weird rules to it.
Its 8 decks, H17, doubles allowed, splits allowed
BUT

no splits on 4s and no splits on 9s. I wanted to know how this changes the house edge.

Also it has early surrender but only against Aces (before dealer BJ check)

I've seen elsewhere the wizard posted that ONLY splitting aces is a 0.35% addition. but this isn't quite as severe, so I know we have an upper bound there.

Thanks!

Can you double after splitting?
If you can’t then you shouldn’t split 4s anyway.

Quote: Hunterhill

Can you double after splitting?
If you can’t then you shouldn’t split 4s anyway.

Yes, you can double after split, or correct it wouldn't matter if you couldn't.

Quote: gamer1741

Another curiosity is I've come across a game that has some weird rules to it.
Its 8 decks, H17, doubles allowed, splits allowed
BUT

no splits on 4s and no splits on 9s. I wanted to know how this changes the house edge.

Also it has early surrender but only against Aces (before dealer BJ check)

I've seen elsewhere the wizard posted that ONLY splitting aces is a 0.35% addition. but this isn't quite as severe, so I know we have an upper bound there.

Thanks!

A quick estimate gives me between 0,045% and 0,05 %

Quote: Torghatten

A quick estimate gives me between 0,045% and 0,05 %

Cool, thank you! What are you using out of curiosity?