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Ask the Wizard #34
Jon from Des Moines, USA
Bryan from Palmdale, USA
Thanks for the kind words. I have barely heard of teams of slot players doing this. However, this is very common with progressive video poker players. There are teams of these professional players who routinely check the meters and when they find one high enough they call their teammates in an attempt to monopolize the machines until somebody hits the jackpot.
The problem with slots is that it is not clear to the player what the odds are of hitting the jackpot so it is not obvious what the jackpot size has to reach for the machine to become profitable. Plus, it probably rarely happens that a meter gets high enough to overcome the house edge.
Star from Ft Worth, USA
Unless you are a card counter, how other players play should not affect what you do. Basic strategy players should stick to the basic strategy no matter how badly the other players play. Other players are just as likely to help you as hurt you. In the end, it makes no difference how they play.
- The game is dealt face up from an 8 deck shoe, with the cut card appearing after 5 decks have been dealt (3 decks behind the cut).
- Dealer stands on soft 17.
- No surrender.
- Can double down on any 2 card total without an ace.
- Can split aces once only, one card on each.
- Can split any other pair to a maximum of 3 hands.
- Can double after split.
- Dealer takes original bets only on blackjack.
- Can take even money on blackjack when dealer’s upcard is an ace.
- Table max is 50 times table min.
- Card counting is permitted if the counter plays the first hand of the shoe, and plays every hand. Counter can play any number of boxes, and any bet amount. Counter can stop at any time, but cannot rejoin a shoe after missing a hand, or join a shoe that is partway through.
Alex from Auckland, New Zealand
I haven't done any simulations, but my educated option is a definite yes, this game can be beaten. The strategy to use in this game would be to bet the minimum when the odds are against you and the maximum when they are in your favor. Normally a sudden 50 times increase in bet size would set off a huge red flag but it seems the counter could do this with impunity in your game. When Atlantic City first opened the casinos could not ask card counters to leave and entire tables were filled with people jumping suddenly from a $5 bet to $300, or whatever the minimums and maximums were. After taking a huge beating, the Atlantic City casinos begged the gaming authorities for a change in the rules, which they got. Not only could this be beaten, but I think it would be a card counters dream.
Mike from Bossier City, USA
The probability that the first card is an ace is 4/52. The probability that the second card is a 10 point card is 16/51. So the probability of an ace first blackjack is (4/52)*(16/51). Multiply this by 2 because the ten could just as easily be the first card and the answer is 2*(4/52)*(16/51) = 128/2652 = 0.0482655, or about 1 in 20.7 .
Bill from Niagara Falls, Canada
You, are right that on average a royal flush will occur once in every 649,740 hands, and that in 1,299,480 hands the expected number of royal flushes is 2. However, this is only the average. With every hand that goes by you are no closer to getting a royal. Every game of independent trials has this memory-less property so a royal flush is never overdue.
The probability of zero royals in 1,299,480 hands is 13.53%.
Vahe from Glendale, California
The payout is the ratio of money won to money bet. For example if players bet a total of one million dollars and the total amount paid to winning bets was $998,000 then the payout ratio would be 98%. Keep in mind that as players recirculate the same money the house edge grinds them down so the typical player will retain much less than 98% of their original purchase. The way to calculate your own ratio if to keep track of the total amount you bet and the total amount you win and divide.
Jari from Turku, Finland
Stanford Wong's Blackjack Count Analyzer is perfect for questions like this. Just plug in the rules and it produces an immediately basic strategy and is ready to run a simulation. Following is his basis strategy under these rules. I did a 31-million hand simulation using Blackjack Count Analyzer, which shows a house edge of 4.13%, under these rules. When I was in Finland they had single zero roulette, which has a much lower house edge than this game. Why the blackjack rules are so stingy in Finland I would like to know.
PLR DEALER PLR DEALER 23456789XA 23456789XA 21 ---------- soft 21 ---------- 20 ---------- soft 20 ---------- 19 ---------- soft 19 ---------- 18 ---------- soft 18 +DDDd-++++ 17 ---------+ soft 17 +++DD+++++ 16 -----++--+ soft 16 +++DD+++++ 15 -----+++++ soft 15 +++DD+++++ 14 -----+++++ soft 14 ++++D+++++ 13 -----+++++ soft 13 ++++++++++ 12 +----+++++ 11 DDDDDDDD++ pair A /////////+ 10 DDDDDDDD++ pair 10 ---------- 9 ++DDD+++++ pair 9 /////-/--- 8 ++++++++++ pair 8 ///////--+ 7 ++++++++++ pair 7 -////+++++ 6 ++++++++++ pair 6 /////+++++ 5 ++++++++++ pair 5 DDDDDDDD++ 4 ++++++++++ pair 4 +++//+++++ pair 3 +////+++++ pair 2 +////+++++ Insurance: No + = hit - = stand D = Double if allowed otherwise hit d = Double if allowed otherwise stand, / = split.
Doug from Calgary, Canada
There are two ways to arrange the ranks for form a 9 high hand, the one you mentioned and 2-3-4-6-7-8-9. The number of suit combinations without forming a flush is 47-4*(combin(7,5)*3^2+6*3+1) = 15,552. So the probability of a 9 high hand is 2*15,552/combin(53,7) = 31,104/154,143,080, or 1 in 9,911. If you were to play just five times the probability of getting 2 9-high hands would be 1 in 9,826,685. That this happened is a coincidence I believe as opposed to a fault in the random number generator or the coding of the program.