> Rules:

> 8 deck
> S17
> D9 (actually D8, but that's irrelevant)
> DAS
> Suited BJ pays 2:1
> Five card 21 (not just any five-card non-busted hand)
> pays 2:1

> This is a game in the Betfair "zero margin"
> series.

> 1) what is the precise return with perfect play? The
> claim is 100% exactly, but I can find no corroboration
> for this.

> 2) Does the "five card 21 pays 2:1"
> necessitate any strategy variations? My feeling is
> that it doesn't but would like confirmation. It is
> EXACTLY 21 required, and only five cards, not six or
> more or any five-card charlie.

I assumed SPL3 as well.

The EV's are:
TD: 0.21050738242957%
CD: 0.219422756294933%

There are a few 4-card exceptions but their not worth typing out for 0.009%

These are not estimates - they should be exact top-of-the-deck values.

Sincerely,
MGP