[Blackjack] Two 9s vs Dealer's 10

[Blackjack] Two 9s vs Dealer's 10

  19:27    Japanese Nokkie

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Is the splitting disadvantageous?


Hi, there.

I'm Japanese Nokkie.

It's June 6 today and I should have made a study of 6's split.
The time that I noticed it was late.
However, today's topic is about 9's split.
Seen from the lower-right on the card 9, it also says 6.
So the two cards below imply June 6.

When a player's first hand is a pair of 9 and a dealer's initial card is 10, stay is recommended in the basic strategy of Blackjack.
Some players, however, choose split.

In my case, I split 9s against 10 many times before.
But I didn't know the BS well.
I thought it was not too bad.

To examine which choice is better, I conducted a test, same as usual.

▼Practical Test (hole card style)▼

Splitting 9s against 10 is not so bad as I expected.

Next, I conducted the test in the European Style.

In the video, Japanese language is mainly used.

▼Practical Test (no hole card style)▼

From both of the tests above, I can say that split is better than stay in this situation.

When we stay, the winning percentage is calculated about 45% in total, except for a tie.
The chip's fluctuation is negative 3 chips. (40→37).

The following graph shows the percentages considering a tie.

On the other hand, when we split the pair, the winning percentage is calculated about 58% in total, except for a tie.

The chip's fluctuation is positive 13 chips (40→53).

The next shows the percentages considering a tie.

In other words, when we split the pair, the probability of NOT losing is about two-thirds.

Although the number of trials are not very large, they are 40, we can use the data for reference.

I will split 9s against Dealer's 10.

It's a deal.

That's all.

I hope my blog will be useful.

Thank you for reading.

Bye.

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