True to 1 or 1/2 deck for 1/4 deck estimation

Deathclutch

Well-Known Member
All right, try to bear with me on this one as this has just passed through my head and it may be totally off but here goes . . .

I am practicing on getting down to 1/4 deck estimation for shoe games. Currently I am using Hi Opt II which adjusts the running count by dividing by remaining whole decks. So sometimes I get strange numbers to adjust my running count by. For example, let's say that I have a running count of +7 in the first 7 cards. I now take the 7*4/23 to get my true count. For smaller numbers that's not really a problem. However when I start getting to larger numbers it slows me down a bit (possibly due to inexperience in truing this way).

Now if I was using a count that divides the running count by half decks remaining such as UAPC I would only be dealing in whole numbers for 1/2 deck estimation. If I break it down to 1/4 deck estimation I'd be working with numbers like *2/23 instead of the 4.

Now let's say that I wanted to change my Hi Opt II to be trued to half decks? What happens to my indices and betting ramps? I'll admit I haven't thought it out too far ahead so some of these may have obvious answers but I don't even want to waste the brainpower figuring it out if I'm completely off base.

How do most of you that use 1/4 deck estimation do it? And would the switch be worth it to relearn all over or should I just suck it up and get more experience using what I'm using now?
 
It makes a difference how many decks they are using.

As for what resolution is best, all I can say is set up your simulator and try it. If you're playing an 8D game whether there are 6 or 6.5 decks left doesn't matter very much. If it's deeply dealt whether you have 1.5 or 1 decks is just a little more significant, but if you're getting pen like that you have no worries anyway. If you're playing a pitch game your needs are different.
 

bjcount

Well-Known Member
Deathclutch said:
All right, try to bear with me on this one as this has just passed through my head and it may be totally off but here goes . . .

I am practicing on getting down to 1/4 deck estimation for shoe games. Currently I am using Hi Opt II which adjusts the running count by dividing by remaining whole decks. So sometimes I get strange numbers to adjust my running count by. For example, let's say that I have a running count of +7 in the first 7 cards. I now take the 7*4/23 to get my true count. For smaller numbers that's not really a problem. However when I start getting to larger numbers it slows me down a bit (possibly due to inexperience in truing this way).

Now if I was using a count that divides the running count by half decks remaining such as UAPC I would only be dealing in whole numbers for 1/2 deck estimation. If I break it down to 1/4 deck estimation I'd be working with numbers like *2/23 instead of the 4.

Now let's say that I wanted to change my Hi Opt II to be trued to half decks? What happens to my indices and betting ramps? I'll admit I haven't thought it out too far ahead so some of these may have obvious answers but I don't even want to waste the brainpower figuring it out if I'm completely off base.

How do most of you that use 1/4 deck estimation do it? And would the switch be worth it to relearn all over or should I just suck it up and get more experience using what I'm using now?

Changing to 1/2dtc from 1dtc would require you to cut your indices in half. It may also cause some unwanted changes to your win rate since the indices your using have already been rounded or floored during their original generation. The change may be also be insignificant.

It will also lower the amount of betting "steps" in your ramp which may hurt your win rate again, search "betting granularity". More steps in the ramp will allow you to bet more closely with the advantage, also search "2d true count conversion or 2dtc".

I would run it thru CVData before you waste your time learning everything all over again. You may be disappointed in the results.

Now if you want to estimate to 1/4 d for betting purposes that may improve your win rate ever so slightly but then you will be using fractional bets and do you really want to slow a good game down with barber pole betting?

BJC
 
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jack.jackson

Well-Known Member
Deathclutch said:
All right, try to bear with me on this one as this has just passed through my head and it may be totally off but here goes . . .

I am practicing on getting down to 1/4 deck estimation for shoe games. Currently I am using Hi Opt II which adjusts the running count by dividing by remaining whole decks. So sometimes I get strange numbers to adjust my running count by. For example, let's say that I have a running count of +7 in the first 7 cards. I now take the 7*4/23 to get my true count. For smaller numbers that's not really a problem. However when I start getting to larger numbers it slows me down a bit (possibly due to inexperience in truing this way).

Now if I was using a count that divides the running count by half decks remaining such as UAPC I would only be dealing in whole numbers for 1/2 deck estimation. If I break it down to 1/4 deck estimation I'd be working with numbers like *2/23 instead of the 4.

Now let's say that I wanted to change my Hi Opt II to be trued to half decks? What happens to my indices and betting ramps? I'll admit I haven't thought it out too far ahead so some of these may have obvious answers but I don't even want to waste the brainpower figuring it out if I'm completely off base.

How do most of you that use 1/4 deck estimation do it? And would the switch be worth it to relearn all over or should I just suck it up and get more experience using what I'm using now?
You would either have to take/use 1/4 indices, or leave your indices the way they are and multiply all your TCs by 4. Provided your using the indices from the book.

I divide by 1/2 decks, and x2, but 1/4 deck for every ace.

Example(Discard tray)


2/20(5decks)
19aces
3/18
17aces
4/16(4decks)
15aces
5/14
13aces
6/12(3 decks)
11aces
7/10
9aces
8/8(2decks)
7aces
9/6
5ace
10/4(1deck)
3aces
11/2
1ace
>EMPTY<


So if my RC is "lets say" +5-+9 and about 1 deck in the discard tray MY TC =+1

Or if theres 2 decks in the discard tray and MY RC is +12 I would then take 1.5x2=TC+3

Ive actually trained myself how to do this very quickly and without mistakes, believe it or not. Because its actually 1 and 4/8 and as long as the numerator is more than half the denominator it would be 3 not 2.

So if my RC is +38 and 3 and 1/2 decks are in discard tray , my fraction would be (5/38) 7 and 3/5x2=TC+15

Note these are my own methods.
 
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Deathclutch

Well-Known Member
jack said:
You would either have to take/use 1/4 indices, or leave your indices the way they are and multiply all your TCs by 4. Provided your using the indices from the book.
This right here is going to be very helpful. There are obvious solutions right in front of my face. There are many ways to get to the same answer and use what I'm using now. Thanks everyone for your answers!
 

assume_R

Well-Known Member
Yes, and remember this multiplying or dividing your indices by 4 (or whatever resolution you want) works like this only for balanced systems, which it seems you're using.

While it won't be 100% accurate (because dividing is not linear), you can also just say "okay, 4.5 decks left and RC = +10. So that's a TC between 2.25 and 2." Or with 4.75 decks left, it's between 2.25 and 2, but closer to 2.

If you really wanted to, your indices could have been generated with the exact fractional value instead of flooring (so perhaps an index is actually TC >= 2.1), but I'm under the impression that the general consensus is that it won't give you much more practical $$ value.
 
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