Doghand, I'll take you up on your offer

Doghand, a few weeks ago you offered to run a sim for me if I provided you some game details. I recently bought Blackjack Attack (Don, thanks for an amazing product) and would like to know my ev/hand and sd for the purpose of using the bankroll/betting charts. I use KO preferred and play DD 66% pen, 4D and 6D 75% pen. All are DOA, DAS, H17 with no surrender. Usually 3 players including me. DD I spread 1-5, 4D 1-8 and 6D 1-10. Figure 100 hands per hour. Is there anything else you need to help me?

Thanks in advance.

advantagenovice,

Here you go! The results shown are for a $10,000 BR: adjust them proportionally for your own BR. Also, you'd probably want to round off the numbers a bit: say $20, $35, $70, and $100 bets for DD, for example.

DD H17 DAS 66% pen 3 players
1:5 spread
RC<=0 $20.70
+1 $37.30
+2 $69.00
+3 & up $103.50

IBA 0.836%
Win/Hand $0.314
SD/Hand $56.054
SCORE 31.48

******************************************************************

4D H17 DAS 75% pen 4 players
1:8 spread
RC<=-2 $12.40
-1 $17.90
0 $37.50
+1 $60.10
+2 $80.20
+3 & up $99.20

IBA 0.767%
Win/Hand $0.198
SD/Hand $44.395
SCORE 19.84

******************************************************************

6D H17 DAS 75% pen 4 players
1:10 spread
RC<=-2 $10.50
-1 $25.50
0 $43.50
+1 $61.10
+2 $81.20
+3 $98.70
+4 & up $105.00

IBA 0.784%
Win/Hand $0.176
SD/Hand $41.942
SCORE 17.70

******************************************************************

You could improve these results dramatically by using a larger spread. For example, on the 6D game, if you instead spread 1:30 ($6.80 to $204.00), your SCORE would more than double, to 36.36.

Hope this helps!

Dog Hand

Thanks for the info. Now I need a little more help. First, what is "IBA"? Second, in Don's charts for ROR and bankroll units the sd values are 1.5 to 4. What am I missing? I'm trying to figure out that to keep ROR at A playing a game at an ev of B and a SD of C I need ? units. I was also interested to see the numbers where the bets are raised don't match what KO teaches. It says that for DD you raise at +1 with a max bet at +4, 4D -1 and +4 and 6D -4 and +4.

advantagenovice,

Sorry for the jargon! "IBA" is Initial Bet Advantage: it's your average edge based on your initial bet for the hand. "Initial" here means your bet before you split and/or double down. Often this is simply called your "edge", or "EV".

The IBA is distinct from the "TBA", or Total Bet Advantage, which is your edge based on the total amount of money you wager on the round, including splits and double downs.

As an example, consider the DD numbers, reproduced here:

*******************************************************************
DD H17 DAS 66% pen 3 players
1:5 spread
RC<=0 $20.70
+1 $37.30
+2 $69.00
+3 & up $103.50

IBA 0.836%
Win/Hand $0.314
SD/Hand $56.054
SCORE 31.48
********************************************************************

What is your average bet? Well, since your IBA is 0.836%, and your win per hand is $0.314, we can say:

(IBA)*(Average Bet) = (Win/Hand)

Solving for Average Bet gives:

Average Bet = (Win/Hand)/(IBA) = $0.314/(0.00836) = $37.56

If you want that in units, rather than dollars, notice that your unit is $20.70, so your average bet in units is

Average Bet = $37.56/$20.70 = 1.814... units

As for the Standard Deviation, if we divide the result given by the average bet, we get the following:

$56.054/$37.56 = 1.49... average bets

Or, in units, we get:

$56.054/$20.70 = 2.71... units

These std. dev. values are in line with what Don has.

I didn't provide the Risk of Ruin, because I was using optimum betting, which corresponds to a RoR of 13.53%.

If you'd care to provide your BR and RoR numbers (offline, if you prefer), I can generate the proper betting scheules for you.

Dog Hand

How do we do that? I don't know any other counters and would really like to talk or meet with some.

advantagenovice,

Open one of my posts. Near the top, next to my name, is a hyperlink labeled "". Click the link, fill out the form, and I'll get the email.

Dog Hand