Blackjack Side Bet "Slingo" Probabilities ?

#1
I visted an Indain casino here in Oregon that had a new side bet I hadn't seen before on their blackjack table called "Slingo". Using shuffle tracking and counting I was up $450 in a few hours just from the sidebet. I was hoping some of the math wizards here could let me know if I was just lucky or as it appeared it's a money maker for good shuffle tracking and counting. Please no general comments about how all side bets are sucker bets, I want to hear from the math wizards on this one on the probabilities, thanks.

Below is the payouts
The grid on the table is a bit let like Roulette, you put your bet in the box for what the total of the 1st two cards will be and you could if you want put a bet in more than one square. With shuffle tracking and counting & a side count on the aces I was just betting the Total of 20 with a high Ten count and with a high Ten / Ace count the Total of 21 bet, I stayed away from the others.

6 deck shoe / hand shuffled
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(Min $1 / Max $10 bet)
- First 2 cards -
total Pays
21 19 to 1
20 8 to 1
19 15 to 1
18 14 to 1
17 12 to 1
Pair 12 to 1
21 or 20 5 to 1
18 or 19 6 to 1
17 or 18 6 to 1
17 to 20 2 to 1
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KenSmith

Administrator
Staff member
#2
Off the top of 8 decks, the house edge on these bets varies from 4.58% to 7.47%. But, the edge is quite volatile. However, with a $10 max bet, there's nothing to get too excited about.

The last time this game was around, it was called Bonus Bet 21.
 
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