Dealer Doublechecks Hole Card
  • When the dealer is checking for blackjack and either spends a long time checking the hole card or does a doublecheck, I remember reading somewhere that it usually indicates a particular kind of card, but can't remember what card or why. Can anyone enlighten me? And does anyone actually use this fact in their play?
  • You know that they don't have a face card because those are easy to recognize. The dealer probably has a low card (maybe 2-4) and may have mistook it for an ace at first glance. A 4 is especially easy to mistake for an ace because of the way the pips line up.

    -Sonny-
  • Sonny, I know the dealer always checks for a blackjack if the up-card is an ace. Considering the up-card is a 10 value card, are you aware of any casinos that DO NOT require checking for a blackjack?
  • Over several hundred hours of play,I've concluded that most dealers look extra hard at 2s and 4s.
    After I've seen a dealer struggle with it and it turns out to be just that,I will act on that as long as the same dealer is working.i'll stand on a 15,16 vs 10 in those cases,and split my 9s.
    But I wait until I've seen the dealer struggle with the first decision.
  • chxplay said:
    Sonny, I know the dealer always checks for a blackjack if the up-card is an ace. Considering the up-card is a 10 value card, are you aware of any casinos that DO NOT require checking for a blackjack?


    Coast properties.
  • Dealers have brain locks just like the rest of us and on very rare occasions they will miss a blackjack. Why or even how that can occur, I just don't know, maybe he has 4's on the brain from the last round, even when he can't see a 4. You can guess what must occur when he flips over his BJ after all those splits and doubles that would not have occured otherwise. And, what about the player that got paid for his BJ?

    If he looks and re-looks when he shows an ace or 10 I would stand on 15 or 16 because you are a 3:1 underdog. If you're wrong you want lose much because of the infrequent occurance.
  • Where are you playing at where they actually check by hand? Every place I have been to has checkers to find blackjacks without having to actually look at the cards. You just look and find a green or red light. If you are trying to read the dealer to see if he has a hand or not I would only do it with a 10 up and not an ace. You could ask the dealer if he has a hand he can't tell you but the look on his face might give his hand away. If you have a hunch about a hand that the dealer actually picked up his cards and looked at it I would only play it in a very marginal situations 10 vs 10 for doubling or hitting or 16 vs 10 for hitting or standing.
  • Usually when a dealer is unsure he will reposition the cards (in and out). I suppose this could be light or no light. I am not privy to who has what.

    LTC- suppose you tell us exactly how the light works.

    - Must the dealer move the cards into some position for the sensor to detect an ace or 10 hole card?

    - If yes, and the dealer has a 10 up and a 10 hole card what happens and why? Is it red for a 10, green for an ace and nothing for everything else.
  • Like LearningToCount mentioned, most casinos use a device to check for blackjack. The ones I play at have a mirror. But even with the mirror, they can't tell what the card is unless it is what they are looking for. Because of raised position of the numbers on ten value cards, they only see white space if it is not the value they are looking for. They put the card in differently when they have an ace showing than when they have a ten showing.

    BUT, I have seen dealers recheck a lot of times even with these devices. In these cases, it doesn't have to do with the value of the cards. They just didn't see it properly. It has no indication of what the card is. If you are playing at a rare casino where the dealer checks by manually lifting the card, if they recheck, I suspect it's because they just didn't get a good look at the card. Just like with the devices. I doubt that it's enough of an indication of what the value of the card is.
  • I've only seen a few places with the red light/green light system.I think they coat the cards with a dye that activates the light.
    The mirrors are much more common. If you notice,the dealers usually put the card one way when checking for a ten,and in another postion when checking for an Ace.
    There are still a few places that hand check. I know of one Indian casino that does and supposedly the cards get so warped that many peoplepick up on it.
  • Pick up on what? The card they check can be anything - or are you saying that during the course of one night with the same deck, they remember the cards that were checked?
  • NYB- I think your point is more likely true in most locations. I would suspect that Cal,LV, Reno and maybe AC may use the light, but not in all casinos.

    The last place I saw dealers bending cards was in the Bahamas years ago.
  • Ray said:
    NYB- I think your point is more likely true in most locations. I would suspect that Cal,LV, Reno and maybe AC may use the light, but not in all casinos.

    The last place I saw dealers bending cards was in the Bahamas years ago.


    I don't know about Cal, Reno, or AC, but I have played in a lot of casinos in Vegas, and I have seen the light in only one casino. I can't remember which one. Almost all the Vegas casinos I played in use the mirror. I only played in two Vegas casinos where they checked by hand instead of using a device. Boardwalk (now gone) and Barbary Coast. And both casinos checked only if an Ace was showing, not if a ten was showing. (But you didn't lost double downs or splits.) I'm told that all of the Coast casinos check by hand, but I've only played at Barbary Coast. I wonder if the policy at Barbary Coast will change now that it's owned by, or will soon be owned by Harrah's.
  • Security Risk said:
    I don't know about Cal, Reno, or AC, but I have played in a lot of casinos in Vegas, and I have seen the light in only one casino. I can't remember which one. Almost all the Vegas casinos I played in use the mirror. I only played in two Vegas casinos where they checked by hand instead of using a device. Boardwalk (now gone) and Barbary Coast. And both casinos checked only if an Ace was showing, not if a ten was showing. (But you didn't lost double downs or splits.) I'm told that all of the Coast casinos check by hand, but I've only played at Barbary Coast. I wonder if the policy at Barbary Coast will change now that it's owned by, or will soon be owned by Harrah's.


    I played at a Tunica casino that was using the optical recognition gadget (lights up red if dealer has 21) and it was one of those "fiasco" sessions. Light often stayed on and red with no card in place. Several mis-reads. Dealer was having to bend the card to peek to get a reliable 21 check, which led to some interesting "available information" in a SD game I played there...

    They've seemed reliable everywhere else I have seen them (vegas, MS coast, etc).
  • Only place in Vegas I've seen them is the Longhorn,a small locals casino that lets you double on three cards and also has late surrender,even on its $2 tables.
    But I've only been in about half the casinos in the city,so there could be many more.

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