Deviation pattern

[Gramazeka]

I'll give you a hint why - 12 vs 3. Stay / hit = 1.5. And , flooring... or ??????

[Freightman]

Yes of course ! 4.2 = 4 flooring, no problems. But I prefer absolutely accurate indeces.

Reminds me of half true counts with the ability to more accurately determine bet size (with QTC) to the appropriate ramp. As a further simple additional example Insurance at halves 6 deck is 3.3 - I have no intentions of flooring to +3 though I will take other strategies into account.

[Gramazeka]

Yes, of course, we take into account hand strength (20 or 18 )and heat.

[ccalice21]

Hi Don, glad you are here. I have a question about the book. Are the indices and playing decisions always used as "above and at"(even when negative)?

For example, on page 115, for 15 vs T, I have index "0" with decision "surrender", and index "4" with decision "stand". Does it mean I should surrender when the TC is between 0 and 4, and stand when the TC is at and above 4?

[ShipTheCookies]

I believe surrender always supercedes standing when given the option between them.

[DSchles]

Hi Don, glad you are here. I have a question about the book. Are the indices and playing decisions always used as "above and at"(even when negative)?

Yes. Greater than or equal to: surrender, insure, split, double, stand.

For example, on page 115, for 15 vs T, I have index "0" with decision "surrender", and index "4" with decision "stand".

Correct.

Does it mean I should surrender when the TC is between 0 and 4, and stand when the TC is at and above 4?

No. It means that, if surrender is offered, you surrender at 0 or higher. If no surrender, then stand at +4 or higher.

Don

[DSchles]

Yes of course ! 4.2 = 4 flooring, no problems. But I prefer absolutely accurate indeces.

Try two sims with "absolutely accurate indices" and integral ones and tell me the difference in SCORE. Assuming, of course, that you can always do the math quickly enough in your head.

Don

[Cacarulo]

Hello,

I notice that some charts only give the cutoff indices, but is not so clear on exactly what to do above or below the index. Is the pattern (attached) always true, that as TC increases from very negative to very positive, the playing decision should change from Hit, to Sur, and eventually Stand? It makes sense to me that when the TC is very negative, I should just hit no matter what, but I just need some confirmation.

Thank you!

Hi,

I understand that it can be a bit confusing at times, but the responses you've received so far are quite clear. If LS is allowed, whenever you receive two cards totaling 15 (T5, 96, 87) and the TC is zero or higher, you should surrender. If the TC is below zero, you should hit. Now, if that total of 15 is made up of three or more cards, the LS rule no longer applies. In that case, if the TC is four or higher, you should stand, and if it's lower, you should hit.
The following is a brief analysis of the 15vT play:

+------------+-----------------------+-----------------------+-----------------------+-----------------------+---+---+
|     TC     |      Probability      |        Standing       |        Hitting        |        Doubling       | 1 | 2 |
+------------+-----------------------+-----------------------+-----------------------+-----------------------+---+---+
|          9 |   0.00088825133252209 |  -0.58804018317597517 |  -0.62280038962443784 |  -1.24560077924887569 | R | S |
|          8 |   0.00236624192560167 |  -0.58128949035654465 |  -0.60993585560231167 |  -1.21987171120462334 | R | S |
|          7 |   0.00317514727983864 |  -0.57622824266298289 |  -0.59945910813941006 |  -1.19891821627882011 | R | S |
|          6 |   0.00759480332920357 |  -0.57015617331959745 |  -0.58660018893371801 |  -1.17320037786743603 | R | S |
|          5 |   0.01049102700115986 |  -0.56511881107183271 |  -0.57503284776851682 |  -1.15006569553703364 | R | S |
|          4 |   0.02325721884929089 |  -0.55970698187682022 |  -0.56211619218242481 |  -1.12423238436484962 | R | S |
|          3 |   0.03316642496243929 |  -0.55493194065129903 |  -0.54973628426056409 |  -1.09947256852112818 | R | H |
|          2 |   0.07040222451636996 |  -0.55015967376011454 |  -0.53670771468833889 |  -1.07341542937667778 | R | H |
|          1 |   0.10647800067263161 |  -0.54584003932214309 |  -0.52385901445369187 |  -1.04771802890738375 | R | H |
|          0 |   0.22582706138281960 |  -0.54169105272892970 |  -0.51070816765527272 |  -1.02141633531054543 | R | H |
|         -1 |   0.22381886187379482 |  -0.53822207257827648 |  -0.49884446928285248 |  -0.99785334664386161 |   | H |
|         -2 |   0.13790334944363461 |  -0.53456606899927583 |  -0.48534051074716389 |  -0.97185814865301523 |   | H |
|         -3 |   0.06363765393036130 |  -0.53114582711215319 |  -0.47126121025815881 |  -0.94486732169462373 |   | H |
|         -4 |   0.04274415274769527 |  -0.52815813287839608 |  -0.45790800261007869 |  -0.91923750243211522 |   | H |
|         -5 |   0.01931494723193923 |  -0.52541462459295218 |  -0.44373674197750607 |  -0.89205095158975911 |   | H |
+------------+-----------------------+-----------------------+-----------------------+-----------------------+---+---+

Of course, if LS is not allowed, the only index that matters is +4.

Hope this helps.

Sincerely,
Cac

[Gramazeka]

Try two sims with "absolutely accurate indices" and integral ones and tell me the difference in SCORE. Assuming, of course, that you can always do the math quickly enough in your head.

Don

I think 2% FPS. My CPU Ryzen 5800x3d vs you 5700G.
Jokes)))
Hi Cac ))

[G Man]

Hi Don, glad you are here. I have a question about the book. Are the indices and playing decisions always used as "above and at"(even when negative)?

For example, on page 115, for 15 vs T, I have index "0" with decision "surrender", and index "4" with decision "stand". Does it mean I should surrender when the TC is between 0 and 4, and stand when the TC is at and above 4?

It puts me out of myself... WHY do you ask again an already answered question ??? I gave you a clear answer on the previous page. It's not an "opinion contest" !

G Man wrote: For example, 15 vs 10 is Surrender at 0 or more, even when you reach +4. The Stand number of +4 kicks in but only if you can't surrender, say after a hit or if the casino rules doesn't permit surrender.
So it should read: Surrender at 0 or more, if you cant surrender hit until reaching +4 where you start Standing. Hit any negative running count.

Now, maybe you can ask Cac or cross post the same question on another board ....

[Gramazeka]

ENHC , 15 vs 10. Sur = > -3.2 TC.

[Cacarulo]

ENHC , 15 vs 10. Sur = > -3.2 TC.

Yes, that's correct under those rules. Surrender if TC >= -3 (floored).

Sincerely,
Cac

[name banned]

Yes, that's correct under those rules. Surrender if TC >= -3 (floored).

Sincerely,
Cac

Are you saying surrender at TC <= -2.1 using flooring? While using flooring, -3.1 floors to -4, correct? I’ve always truncated, so I just want to clear up any possible confusion.