Since May '99
アトランティックシティ・ブラックジャック必勝法
HOW TO BEAT ATLANTIC CITY BLACKJACK

Part 2: 戦略表について

Description

This article describes basic and High-Low strategy tables for Atlantic City rules with four or more decks. The strategy information was taken from Stanford Wong's book, "Professional Blackjack". The tables tell you the mathematically best play given a certain circumstance - whether to surrender, split, double-down, hit, or stand.

Rationale

I made these tables for myself, because I was unsatisfied with any I could find in published books. I am very satisfied with the result, so I thought I would share it with y'all. You may wish to modify the tables for your particular situation (different counting system, different casino rules, etc.) If so, you'll need to get the troff source from me, or else you can use the "Do Your Own Strategy" blank chart that is included.

Caveats

I do not guarantee that these tables are correct. If you find any mistakes, or have any suggestions, please let me know, and I will repost if necessary. Also, note that Wong computed his numbers for 4 decks, and he assumes 4 decks = 6 decks = 8 decks for purposes of strategy adjustments. If anyone has High-Low strategy numbers that have *proved* to be more accurate for 6 or 8 decks, then let me know.

How to print the tables

In a subsequent article, you'll find the Postscript gobble-dee-gook that hopefully can be understood by your printer. However, it's uuencoded and compressed. Save the article to a file. "uudecode" the file. "uncompress" the resulting file, high-low.ps.Z ("uudecode" and "uncompress" are UNIX programs that you hopefully have. There is no need to strip out the article header before running uudecode. If everything works, then you should wind up with a file named high-low.ps that has "%!PS-Adobe-1.0" as its first line.) Send high-low.ps to a printer that understands Postscript. (This includes the popular Apple Laserwriter II printer and many others.) There will be a few semi-blank pages, because the original text formatter, troff, is brain-damaged. What you want are the pages with the tables for "High-Low", "Basic Strategy", and "Do Your Own Strategy".

How to use the Do Your Own Strategy table

Use the Do Your Own Strategy table for memory recall practice or to devise a table with a different set of strategy adjustment numbers, perhaps for a counting system other than High-Low.

How to read the Basic Strategy table

Cross index your hand with the dealer's face-up card. If there is an "X", it means "yes, do the corresponding decision" - conversely, a blank means "no, *don't* do the corresponding decision." Read from the bottom up. First see if you should surrender (if this option is available), then split, then double, then stand. If nothing applies, then hit.

For example, suppose you have two 8's, and the dealer has a 10 showing. If you are playing at the Claridge (or Trump Plaza), you first see if you should late surrender, but cross indexing 8-8 with 10 under late surrender shows that you should not. You then check splitting - the table shows that you always split 8's, since there are X's all the way across. However, if you split 8's and get another hand of 8's, then you cannot resplit. You then look up to see if you should double - of course not - and then you look up to see if you should stand; 8-8 versus 10 is blank, so you don't stand and instead you take a hit.

How to read the High-Low Strategy table

Cross index as with the basic strategy table. Follow the basic strategy, except in these cases:

1) If there is a positive number in the box and the true count is greater than it, it means "override basic strategy, so yes, do the corresponding action." 2) If there is a negative number in the box and the true count is lower than it means "override basic strategy, so no, *don't* do the corresponding action."

To conform to the above and to avoid confusion, zeros are noted as positive or negative. The somewhat counterintuitive use of a "Stand" decision as opposed to a "Hit" decision is again to conform to the above and to avoid confusion in the long run.

This all sounds complicated, but it's simple once you get used to it.

For example, using the previous example, you would deviate from basic strategy and surrender 8-8 against 10 if the running count were positive (greater than +0). You would always split 8's, but you would deviate from basic strategy and stand on hard 16 when the running count were positive.

How to highlight the High-Low Strategy table

I highly recommended that you use a highlighting pen to indicate basic strategy on the High-Low Strategy tables. Overlay your High-Low printed page on top of your Basic Strategy page. Press down so you can the X's through the High-Low page. Highlight everywhere an X shows through. Note that there is a basic strategy X everywhere there is a negative High-Low Strategy number, and there is a basic strategy blank everywhere there is a positive High-Low Strategy number (this would not be true for some ranges of counts larger than -1 to +6.)

Still confused?

You can send e-mail to hall@rocky.bellcore.com if you have any questions on these charts.

Twenty-one@geocities.com

Last modified: Wed May 12 22:54:15 JST 1999

LinkExchange Japan Member