[Blackjack] Double down on 9

[Blackjack] Double down on 9

  21:51    Japanese Nokkie

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Blackjack Strategy

Can you double down on 9 aggressively?

In the BS of Blackjack, double down is recommended against the dealer's 3-6.

The other day, the experiments on 9 vs D3 & 9 vs D6 were already done.

This time, I combined the two experiments into one video.
The playback time is about 15 min.

The Result of 9 vs D3

The following two graphs show the results based on the 100 data.

Be careful when you've bet a lot.

The winning rates are completely same.

Hitting hand 9 and taking 2's card, the result occasionally differs.

The winning percentages except for a tie

 are as follows:

Double 54%    Hit 55%

The chip's fluctuation

Double +16 chips    Hit +10 chips

To sum up, it's difficult to say clearly which choice is better.

From the chip's fluctuation, doubling down would rather better.

The Result of 9 vs D6

The following two graphs show the results based on the 100 data.

Whether to win or not may depend on the dealer's final hand.
Even though the player takes a card of 10 and his hand has become 19, most players would be still concerned about the result.

The two graphs are completely same.

The winning percentages except for a tie

 are as follows:

Double 61%    Hit 61%

The chip's fluctuation (Bet amount: 1 chip every time)

Double +38 chips    Hit +19 chips

To sum up, I can say that we should double down.

★Considerations★

When doubling down on 9 vs D's 3-6, we would win at a rate of 54-61%.

That's based on the experiments.

Then what about 11-doubling vs D's 3-6?

I bet the winning rates will be higher.

That' all.

Good luck for your 9-doubling.

Bye.

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