I was feeling understimulated, but I'm also too poor to spend much time in the casino. So I created a genetic algorithm for creating the "optimal" strategy, specifically for the rDrama casino. Note that I'm not much of a goombler, so I may get some terms wrong.
Using this strategy, over a million games, the house's edge is about 1.10Β±0.06%. That is an improvement over this one and this one, which net an edge of 1.63% and 1.52Β±0.07%, respectively.
There may still be better strategies, but this one summed up:
Stand on a hard 17 and up (duh);
Stand on a hard 16 through 12, if the dealer has a 6 or lower, except if you have 12 and the dealer has a 2;
Stand on a soft 17 except if the dealer has a 9, 10 or ace;
Double down on a 10 or 11 except if the dealer has an ace, or if both you and the dealer are showing 10;
Hit otherwise.
details
I can't share the code as it's based on a proprietary algorithm unfortunately.
The GA, a real-valued EDA to be precise, evolves a 241-valued genome. 160 values for the hard-hand table, 80 values for the soft table, and one for insurance. Especially the hard table could have been smaller and insurance is well-known to not be worth it in the long run, but 1) it's good to have some easy parts for sanity checking and 2) maybe the algorithm could find an exploit 
But it didn't.
Because I only had a real-valued GA at hand, each value mapped to a probability to stand, hit, double-down-or-hit or double-down-or-stand. The probabilities are roughly sinusoidal and therefore repeat to let the algorithm reach "far away" actions easier (such as when going from double-down-or-stand to stand).
Each strategy played 100β―000 randomly-generated games. Population sizes started at 40 and doubled with every new population up to 640. The GA used a scheme that makes counting actual evaluations difficult, but I'd estimate about 500 billion games have been played.
Why did I go through all this effort again? Like I'm on vacation from precisely this kind of shit. Goddarn
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So even with this it's still worse than slots at 1%
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You can only get an edge by counting cards in blackjack. You have to adjust your bet size and strategy depending on the count.
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you can't even count here it resets each hand
i'm pretty 
sure 
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Iβm still mad they took away the ability to double on anything other than ten or eleven. Also that they took away five card Charlie. Totally changed everything.
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Yeah
it used to be player's edge but (((they))) realized the effects of this (after they all got rich 
with it).
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Jannies donβt want us goomblemaxxing
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that's over a ton of iterations. You could easily use it to get 10x or lose all your DC. What matters is being better than your own average.
Usually this sort of thing is a teaching guide. Once you do it about 10-20 times you'll learn from instinct. You also develop your own preferences, because sometimes your risk/fun tolerance will change depending on the situation.
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Even if you play blackjack
optimally, if each hand 
is independent (they shuffle the deck 
between every hand) then 
your expected return 
ratio for one hand 
is equal to your expected return 
ratio on any number of hand, no matter 
the magnitude of each individual bet.
Say your expected return
is 95 cents on the dollar. So if you bet 100 bucks, you expect to win 95. That's whether you bet 100 bucks on 1 game 
or 10 bucks on 10 games 
or 1 buck 
on 100 games 
or 50 bucks on your first 
game 
and 10 bucks on your next five... In the end, you can expect to earn 95 cents on the dollar.
So no matter
your strategy or how you vary your bets 
you're better off playing slots. Blackjack 
is definitely way more fun.
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