About BlackJack 101

Version 1.0.1

BlackJack 101 is a basic strategy trainer for the game of Blackjack (link to Wikipedia, opens in Safari). It does not actually play hands of Blackjack, and it doesn't keep track of winnings. It does display how often you chose the correct basic strategy when presented with random Blackjack hands. Basic strategy is based on mathematical analysis of the game, introduced by Edward O. Thorp (link to Wikipedia, opens in Safari) and developed by numerous analysts since.

The play is simple: the app deals a hand to you and an upcard to teh dealer. You have five options: Hit, Stand, Double, Split, Surrender, or Take Insurance (not all of the options are legal at a given time, and it is part of the training to decide which are legal actions). You select actions until you get the correct one, and then you are dealt either a new card or a new hand. The stats counter keeps track of your percentage of correct guesses.

There are 5 screens in this app:

Practice Screen

The practice screen is where the action is. Here you are dealt hands and must choose the correct action. There are five possible actions:

Actions

Hit - Take another card from the dealer.
Stand - Stop taking cards, ending the hand.
Double - Take one more card from the dealer and end the hand.
Split - Split one hand into two (must have 2 cards of same value)*.
Insurance - If the dealer shows an ace the player can take insurance against a blackjack.*

*Splitting
After splitting pairs in a real game of Blackjack the player would play out each hand individually. In Blackjack 101, after the player correctly chooses to split a new hand is dealt. (If the player incorrectly chooses to split, the split button is disabled and player is prompted to try again.)

*Insurance
By taking insurance the player is essentially making a side bet that the dealer has a blackjack. In basic strategy taking insurance is never a good bet, so this option is always wrong. (In future versions of the app, when card counting has been incorporated into the game, taking insurance will sometimes be a correct choice.)

Practice Modes

There are 3 practice modes:

All: Deals hands randomly, plays out entire hand until stand or bust.
Soft: Deals only soft hands (one ace, one other card). Plays out entire hand.
Pairs: Deals only pairs, only plays first decision (to split or not to split).

Stats

Keeps track of basic statistics: (hands played, choices made, errors made, percentage of correct choices). Reset button sets all stats to 0.

Strategy Card Screen

This screen shows the optimal play for each combination of player hand and dealer up card. The strategies are consistent with those found at www.blackjackinfo.com (link opens in Safari). There are 3 sections, one for hard hands (hands w/o an ace), soft hands (hands w/an ace), and pairs. When you select the strategy card tab it displays the section that is appropriate for the hand you are currently dealt. There is a legend for the symbols at the bottom. Basically the colors parallel the stop light colors: green means go (hit me) red means stop (stand), yellow means go just once more (double down). White means "I surrender". Blue means split the cards. (Sorry, no parallel with traffic lights, but if you've read the Bible I bet you can come up with something). You can change the ordering of the numbers in the column and/or row headers in the Settings screen.

Rules Screen

This screen lets you modify game rules. After modifying the rules the strategy card will be updated to reflect the modifications to basic strategy.

Decks
The number of decks in the shoe affects the basic strategy. Fewer decks is more advantageous for the player, but most Vegas games with one deck alter other rules to eliminate any increase in odds.

Dealer Hits Soft 17
In normal Blackjack the dealer stands on 17 or higher, but when this rule is in effect the dealer will hit a 17 if it is soft (i.e. Ace + Six). This is a common Vegas Rule. It slightly decreases the player's odds.

Double on
Indicates when the player may double down. The options are never, only on 10 or 11, only on 9-11, or on any cards. (Of course, player may only double on the 1st 2 cards). There are many instances with soft hands where doubling is advantageous, so games which only allow doubling on 10/11 or 9/10/11 decrease the odds for the player.

Double after split
Indicates whether doubling down is allowed after splitting pairs. This doesn't affect the play in this training app, since splits are never played out, but it does affect the strategy for splitting pairs in some circumstances.

When surrender allowed
Indicates when the player is allowed to surrender. Can be either early, late, or never. Early surrender means you get the option to surrender before the dealer checks for blackjack. It is the most advantageous for the player. Late surrender is more common, it is less advantageous, but still better than no surrender.

Settings Screen

Orientation
Left Handed vs. Right Handed: You can choose how the practice screen is laid out, with the action buttons on the left or on the right. They are nearly mirror images of each other. I call one "left handed" and the other "right handed", but really it's just personal preference which works better for you.

Strategy Card Display Order
Affects ordering of the numbers in the row and column headings on the strategy card. I prefer the high to low ordering, but for some reason nearly all basic strategy charts you'll find in books and on the Internet will have the opposite ordering, so I added the ability to switch the order if you desire.

Display Feedback
Determines whether or not positive/negative feedback is displayed after each choice. If you don't care for the rah-rah feel of "Good Move!" and "Right On!" after each choice, turn this off. With the feedback the only cue that you made the right move will be the fact that a new card or hand is dealt after you make the choice.

Delay Between Hands
This control sets the number of seconds (0-4) after the player presses an action button before new card or hand is dealt.

Help Screen

This is the screen you are viewing now. For more help, or bug reports or feature requests, email me at daver@redwork.org
(clicking on this link opens a new message in Mail).

Back to de top.