I got to thinking about an area of the game I haven't read about. (I read Basil Nestor, The Smarter Bet Guide to Blackjack).
In the simplest terms, I believe BS charts are based on the players known hand vs. the odds (probability)of the dealer having certain cards available.
For example: Dealer has Ace up, chart shows dealer has 31% chance of BJ. If dealer has 10 up he has a 8% chance of BJ.
Now my complicated question. I believe the charts recommend to hit or stand based partly on what the dealer shows. Do the charts take into account what to do after the dealer "peeks" at the down card in the little mirror and assumes he does NOT have blackjack? or do BS charts just assume when he shows ace, there is a 31 % chance he has BJ and act accordingly.
Sorry if that's not a clear question, but isn't that little peek a clue? Almost like card counting saying NOPE, no 10 here (only leaving A-9 as possibilities) I would think the player's odds of winning increase at that point.
If he has 21, games is over. If he peeks and doesn't have 21, now I get to make decisions on splitting, doubling, standing, etc. KNOWING he does not have 21.
In some games,the dealer does not check his card until all the players have acted,and you would lose both your bets if you split and he had a BJ.In other games,it plays the same but you lose only your initial bet. There is an entirely different BS for each of those game.
If I understand your question correctly,you are referring to the normal way dealers check and you would use your normal BS. The standard one for the other rules-number of decks,h17 or S17,ect,ect.