7's

[cisco]

I was practising with single deck, h17, da2 game and I had a pair of 7's with a dealer's face card. I went to hit and the simulator said to stand. I thought it was wrong, but went to look it up and sure enough on a 10 you should stand, but not on a 7, 8, 9 or ace. Why is that?

[shadroch]

The simple answer is because the math behind BS has determined its the best move. A more complicated answer would involve the ratio of cards remaing among the 49 unseen cards, be a tremendous bother and essentially say the same thing.
you don't need to understand the math, you need to trust the math.

[takinfromindians97]

Originally Posted by cisco

I was practising with single deck, h17, da2 game and I had a pair of 7's with a dealer's face card. I went to hit and the simulator said to stand. I thought it was wrong, but went to look it up and sure enough on a 10 you should stand, but not on a 7, 8, 9 or ace. Why is that?

I believe it because seeing as how you have used up half the sevens in the deck, they suppose its not probable to catch a 3rd seven for a 21. It can happen but its not statisticly sound. Blackjack is a game of math a probabilty. Just like how you stand on three card 16 againtt to equal dealer 10, or use fred renzeys rule of 4 and 5. You figure if you have a 16 with a four or five in it, chances are your not going to catch another 4 or 5 to make that beast into a beauty. There are a few hands that can be played differently like that.You make your desision based on what different cards come out to equal the same number in your hand, if that sounds right to you, it did when i wrote it haha. Hope this helped a little bit.

[bj bob]

Originally Posted by cisco

I was practising with single deck, h17, da2 game and I had a pair of 7's with a dealer's face card. I went to hit and the simulator said to stand. I thought it was wrong, but went to look it up and sure enough on a 10 you should stand, but not on a 7, 8, 9 or ace. Why is that?

The fundamental answer is that, in single deck, once you have withdrawn two of the sevens (i.e., your own hand) there are only two more sevens available in the the deck to make a perfect hand and so, you've screwed yourself simply by the fact that you've taken your own 7's out of play. This, by the way only applies to SD play. In any multideck game BS says to hit.