Nooob thoughts on the 6/5 debate - is this heresy ?

UK-21

Well-Known Member
#1
Been doing some thinking on the subject of game selection - the goods ones and not so good ones. Single deck 6/5 was on the shopping list of things to examine. I wondered if the regular contributors would care to comment on my thoughts below?

6/5 games? - On this site it's stated that a single deck game paying 6/5 on snappers starts with a house edge of 1.45% (lets say one and a half for the purpose of this posting). Six and eight deck shoe games have an off the top house edge of around half a per cent depending on the house rules. So there's roughly a one per cent off-the top difference between the two games?

Now, as a game is played the edge will continually shift backwards and forwards - perhaps more so in a single deck game, where a RC of plus one or minus one movement is a more significant shift of edge than a +1 or -1 movement in a six deck game. On the reading I've done, a TC of +1 in a normal game is reckoned to virtually eliminate the half percent house edge, and a TC of +2 move it in the favour of the table by roughly around half a percent. Does it therefore follow, that if playing a single deck game paying 6/5 on BJs, a TC of +3 will effectively remove the house edge? If so, would it follow that a TC of +4 or better would put the edge in favour of the table?

If this is the case, is it not more advantageous for a player to be playing a single deck game with a count of +4 with half a deck dealt (albeit with the lower BJ payout), rather than a six deck shoe having a running count of +8 with half a shoe dealt? (I use this simply as an example).

I pose these questions as there's a great deal written about the woes of 6/5 SD blackjack, with the focus on the off-the-top house edge, but not nearly as much consideration given to the greater edge fluctuations which can potentially overcome the 1.5% starting disadvantage? (until the shuffle up anyway). Is there any reason why playing single deck 6/5 at min table stakes, and spreading large when a TC of +3 or better presents itself, couldn't be applied in the same way as with other games with a lower house starting edge?

I suppose further questions fall out of this?

In a previous post somewhere I did ask whether those playing 6/5 tables would receive unwelcome heat as a result of spreading large and being seen as a possible counter. Didn't get much response. Would it be possible to jump from table mins to say 12 units for the next hand and get away with it? Do the pit give a $#it about what goes on at the 6/5 tables bet speading wise?

In 6 deck, 75% pen games, it's stated (in Arnold Snyder's "Blackbelt in Blackjack") that an advantageous edge (based on 3/2 payouts) will only move in the players direction 22% of the time. To what degree does this change in SD games, and would the 6/5 payout effectively counter any improvement?

For a non-pro player like myself visiting LV, where playing time will be quite limited, what are the pros and cons of playing 6/5 games at table mins and upping bets on TC+3 or better (to 16 units at TC +7), against playing shoes on an all hands basis (spreading 1-8/16)? (I appreciate that back counting will improve the 22% of the time that an advantage is playable to 100%).
Putting it another way - which game is better, 6/5 SD or 6 deck play all?

I've asked lots of theoretical questions that go beyond the stictly "don't play 6/5. Period." Apologies in advance if I've hit any raw nerves. Please don't throw back too much rotten fruit.

Newb99.


Just as an afterthought, there are no SD games in licensed casinos in the UK so my posting really is for discussion as a means of putting the issue of advantage/disadvantage of the SD 6/5 game into perspective. The proscribed ruleset to follow in the UK is set by the Gambling Commission - which states clearly that in the UK BJ is to be played with 6 decks.
 

EasyRhino

Well-Known Member
#2
You're roughly right, you'd be talking around TC of +4 or so before it would be worth anything (I don't know the exact breakeven). But bear in mind that TC's of +1 thru +3 are your bread and butter when counting, and if you're only talking about +4 or higher, you're left with way less than 22% of hands to play.
 

SecurityRisk

Well-Known Member
#3
newb99 said:
On the reading I've done, a TC of +1 in a normal game is reckoned to virtually eliminate the half percent house edge, and a TC of +2 move it in the favour of the table by roughly around half a percent. Does it therefore follow, that if playing a single deck game paying 6/5 on BJs, a TC of +3 will effectively remove the house edge? If so, would it follow that a TC of +4 or better would put the edge in favour of the table?Just as an afterthought, there are no SD games in licensed casinos in the UK so my posting really is for discussion as a means of putting the issue of advantage/disadvantage of the SD 6/5 game into perspective. The proscribed ruleset to follow in the UK is set by the Gambling Commission - which states clearly that in the UK BJ is to be played with 6 decks.

I don't think TC of +3 would remove the house edge. Remember, part of what gives the edge to the player when the count is high is the fact that the player gets paid 3:2 on blackjack and the dealer does not. But if blackjack only pays 6:5, that removes a lot of the edge. I don't think a TC of +1 will remove .5% edge on this game. So I don't think TC of +3 eliminates the edge, and I don't think you even have and edge at TC of +4. Maybe someone could explain it better with some numbers.
 

QFIT

Well-Known Member
#5
There is an edge at +4 in 6:5 BJ. But, you would be standing behind the table, jumping in for one hand, 10% of the time, mid-deck. Try that a couple times at single deck and they'll tell you to wait for the shuffle to bet.
 

moo321

Well-Known Member
#6
6:5 blackjack gargles balls. You're really better off playing poorly cut 8 deck games. Even though it's a carny game, it's going to get attention because it's single deck. Head over to the shoes, spread 1-20 with glee, and make some money.
 

UK-21

Well-Known Member
#7
EasyRhino said:
You're roughly right, you'd be talking around TC of +4 or so before it would be worth anything (I don't know the exact breakeven). But bear in mind that TC's of +1 thru +3 are your bread and butter when counting, and if you're only talking about +4 or higher, you're left with way less than 22% of hands to play.
Thanks for your response. Without meaning to be thorny, is it still 22% on a single deck game? Since posting this, I've put my nose back into Snyder's book and read the chapter on single deck play and depth charging (didn't bother originally as SD isn't on the menu in the UK). He reckons the fluctuation in movement of the edge is far greater, and that advantageous opportunities come up far more often - although for much shorter periods.

Assuming there will only be around 4 hands dealt from a single deck at best, after two hands (15-18 cards with 3 players - roughly a third of the deck?) there would only have to be a count of +3 in order to have an edge of around 0.75%? During the many many times I've counted down a single deck, having a count of +3 a third of the way in is quite a frequent event (+5 and +6 is not uncommon either).

moo321 said:
6:5 blackjack gargles balls. You're really better off playing poorly cut 8 deck games. Even though it's a carny game, it's going to get attention because it's single deck. Head over to the shoes, spread 1-20 with glee, and make some money.
Well, that was the point of my posting - I'm not convinced (at this stage at least) that playing an 8 deck shoe is a better option, hence my request for feedback from those who have done the maths. Snyder reckons that even a 6/5 SD game can beaten where it's possible to jump in at a good count and play just a hand or two before the shuffle up. If advantage comes more frequently than the 22% of a 6 deck game, what is the real cost of making min table bets for the time where there isn't an advantage, and what spread would be needed? I did read someone's view in an article yesterday evening that a spread of 1-16 would be needed, although this wouldn't be tolerated even on a 6/5 table????

http://www.gamemasteronline.com/Archive/Blackjack/6to5SingleDeckBlackjack.shtml (Archive copy)

Thanks again everyone.

Newb99
 
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#8
QFIT said:
There is an edge at +4 in 6:5 BJ. But, you would be standing behind the table, jumping in for one hand, 10% of the time, mid-deck. Try that a couple times at single deck and they'll tell you to wait for the shuffle to bet.
Unless you're at the Showboat! I did that for a while, jumping in for a hand or two at a time. Felt like I was boxing.

If anyone tries to beat 6:5 with counting, remember the card EOR are different and High-Low becomes a weak count. Ideal count for 6:5 BJ is Renzey's Mentor Count: {-1,1,2,2,2,2,1,0,-1,-2} {A....10}
 

UK-21

Well-Known Member
#9
Another consideration for making up the edge - how about treating an A-10 as an eleven on RCs of +5 or higher and doubling down where appropriate (instead of taking the 6-5 payoff) ? Something I wouldn't think anyone would consider in a "normal" game??

:)
 
#10
Automatic Monkey said:
Unless you're at the Showboat! I did that for a while, jumping in for a hand or two at a time. Felt like I was boxing.

If anyone tries to beat 6:5 with counting, remember the card EOR are different and High-Low becomes a weak count. Ideal count for 6:5 BJ is Renzey's Mentor Count: {-1,1,2,2,2,2,1,0,-1,-2} {A....10}
Or ZEN or UBZ. zg
 

N&B

Well-Known Member
#11
I really don't like 6/5 BJ. Its a bad game that should be left to die. Single deck gets what 5 hands heads-up... one round full table?. Its a bad joke, that wastes time in shuffling and offers no opportunity for 'resonable expectations'. Please run, don't walk away from it.
 
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Canceler

Well-Known Member
#12
newb99 said:
Another consideration for making up the edge - how about treating an A-10 as an eleven on RCs of +5 or higher and doubling down where appropriate (instead of taking the 6-5 payoff) ?
Disclaimer: I'm no expert on SD OR HiLo. (Or anything, really.)

It looks like an RC of +10 might put you in the ballpark, but only against a 5 up. For other upcards it's not worth doing at all.
 

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