My Blackjack Success

The Omega II card counting system was developed by Bryce Carlson and was introduced in his book Blackjack for Blood in 2001.

It is an advanced system that is difficult to learn, but extremely effective.

What makes this system harder is that the indexes range from -2 to +2, and keeping track of aces is encouraged.  That means a lot more to keep track of during a hand.

In addition, a true count is used instead of only the running count, meaning additional math is involved.

Fortunately, the Omega II system is a balanced system, meaning if you were to count down an entire deck, you would end up with 0 at the end, making it easy to practice by counting down decks. 

How it Works

Each card in the deck is assigned a value of -2, -1, 0, +1, or +2.  The chart of values is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+1	+2	+2	+2	+1	0	-1	-2	-2	-2	-2	0

As the cards are dealt, a running count is kept.  The count does start at 0 and is increased or decreased per the value of the card dealt. You will then need to convert the running count to the true count before deciding on your bet.  The true count is determined by dividing the running count by the estimate of remaining decks in play.

When the next hand is dealt, you add the new card values to the previous running count, not the true count.  But once again, when you’re ready to bet, convert the running count to the true count and bet based on the true count.

Your running count will revert back to zero once the cards are shuffled.

ACE TRACKING

Because aces are given a value of zero, some consider them not counted, but keeping track of how many have been dealt, will greatly increase the effectiveness of the Omega II system.

It does mean extra work to keep a separate count of aces, but studies have shown that knowing the ace count, increases the system’s efficiency by almost 3 percent.

If you have a high positive count and know there are still lots of aces left in the deck, increasing your bet at this time, with a greater chance of hitting a blackjack that will pay 3-2, can greatly improve your profits.

SIZING YOUR BETS

As with other systems, the higher the positive true count, the bigger your bet should be.  If the true count is low or negative, you want to keep your bet at the table minimum.

Using the true count as a multiplier is again, most popular. For example, if the true count is +4, your bet should be 4 times the table minimum.  Conversely, if the true count is +1 or less, your bet should remain the table minimum.

Of course, sizing your bet is totally dependent on your individual playing style.  However, the use of a bet sizing system should be practiced because it will keep your wins and losses manageable, while misdirecting the fact that you’re counting cards.

FINAL THOUGHTS

The Omega II counting system is best used by an intermediate player because of its complexity.  Omega II is a powerful, effective and efficient system that offers great rewards for those willing to learn it.

The Mentor card counting system is another one developed by Fred Renzey and is introduced in his book the Blackjack Bluebook II. 

This is a multi-level system and also considered a level two system because of the wider range of indices.

What makes this system harder is that the indexes range from -2 to +2, so there is more memorizing to be done.

Another difficult part to this system is that it uses a “true count” and not just the running count.  This means some additional math, fortunately not too difficult though.

What makes it easier to learn is that it is a balanced system, meaning if you were to count down a deck, you would start with 0 and end with 0.  That makes it easier to practice because you know if you’re not at 0 when you run out of cards, you counted something wrong.

How it Works

Each card in the deck is assigned a value of -2, -1, 0, +1, or +2.  The chart of values is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+2	+2	+2	+2	+1	0	-1	-2	-2	-2	-2	-1

A running count is kept as the cards are dealt.  The count does start at 0.  You will need to convert the running count to the true count, which means, for this system, dividing the running count by the estimate of remaining double decks in play. Note that the true count is figured out based on the number of “double” decks remaining.  That is different than other systems where the conversion is based on remaining single decks.

As you keep track of your running count, before you decide on your bet, you convert that running count to the true count. 

When the next hand is dealt, you add the new card values to the previous running count, not the true count.  But once again, when you’re ready to bet, convert the running count to the true count and bet based on the true count.

Your running count will revert back to zero once the cards are shuffled.

SIZING YOUR BETS

If the true count is positive, you’ll want to increase your bet, if it’s negative, you want to keep your bet at the table minimum.

Most players like using the true count as a multiplier with this system.  For example, if the true count is +4, your bet should be 4 times the table minimum.  Conversely, if the true count is +1 or less, your bet should remain the table minimum.

Ideally, sizing your bet should be done by whatever method fits your individual playing style.  Use of a bet sizing system, will keep your wins and losses to maximums and minimums, while misdirecting the fact that you’re counting cards.

FINAL THOUGHTS

With the Mentor card counting system being a level two system, with a betting correlation of 97%, it is efficient and understandably very effective with medium sized shoe games.  

It is not an easy system for a beginner, but an advanced player could be quite successful using this system.

The Uston APM (Advanced Plus/Minus) card counting system was developed by Ken Uston, and first published in his book, Million Dollar Blackjack, in 1981.  He is also a member of the Blackjack Hall of Fame.

Many argue that this system is what introduced card counting to blackjack players and thereby increased the popularity of blackjack.  

It is a level one system, easy for beginners to learn, and yet effective in the proper situations.  The main shortcoming to the system is that it was developed for single or double deck games, which are hard to find.

He has added the APC (Advanced Point Count) and SS (Strongest and Simplest) systems to account for multiple deck games.

How it works

There are only 3 card values: -1, 0 or +1 and your count starts at 0 and continues until there is a shuffle, where you again start the count at 0.

It is a balanced system, meaning if you were to count down a deck, you would end at zero.

The card value chart is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
0	+1	+1	+1	+1	+1	0	0	-1	-1	-1	-1	0

It is easy for the beginning card counter because you can easily cancel out cards that are counted by the presence of another card.  There are 3 cards with no value, 5 cards with a plus 1 value, and 5 cards with a -1 value.

When counting at a table, simple eliminate pairs that will cancel each other out and the remaining points are added to the running total count.

As with all counting systems, the higher the count, the more you should bet.  As the cards are dealt, you assign the above appropriate values to the card and keep a running total count.  You make your next bet based on that running count being positive or negative.

Because it is for single deck games, there is no need to consider a true count, because the running count and true count are the same when considering a one deck game.

While tracking aces is not part of the system, you can increase the advantage of using this system by also keeping track of the aces.  Because the system is so simple, it shouldn’t be hard to remember if any aces have been played.  If half the deck has been played and no aces have dropped, with a plus count, you stand a better chance of hitting blackjack and therefore should increase your bet.

Sizing your bets

Because of the simplicity of the system, using the running count as a multiplier is considered best practice.  For example, if the running count is +4, your bet should be 4 times the table minimum.  Conversely, if the running count is +1 or less, your bet should remain the table minimum.

Ideally, sizing your bet should be done by whatever method fits your individual playing style.  Use of a bet sizing system, will keep your wins and losses to maximums and minimums, while misdirecting the fact that you’re counting cards.

Final Thoughts

The Uston APM system is another easy card counting system for beginners to learn.  It is a good system to try as your first effort in card counting, which you can then use as a basis for advancing into more technical systems.

It is an old system that can still be reliable and effective if you’re able to find a single deck blackjack table to play.

The Silver Fox Count system was developed and introduced by Ralph Stricker, in his book The Silver Fox Blackjack System.  The moniker fox was thrust upon him by a pit boss who felt he was slick as a fox, and Stricker himself added the “silver” as his beard hair started to turn gray.

It is a level one, balanced system, considered one of the easiest systems to learn, yet effective enough to reduce the house edge. 

How it works

While the system is considered easy, it does require the use of a true count, not just a running total count.  Use of a true count basically helps you take into consideration the number of decks being used.

The true count is determined by dividing your running count by the estimated number of decks left in the shoe.  For instance, if you had a running count of +12 and you estimate there are 4 decks left in the shoe, the true count would be 12/4 or +3.

There are only 3 card values: -1, 0 or +1 and your count starts at 0 and continues until there is a shuffle, where you again start the count at 0.

The card value chart is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+1	+1	+1	+1	+1	0	-1	-1	-1	-1	-1	-1

As with all counting systems, the higher the count, the more you should bet.  As the cards are dealt, you assign the above appropriate values to the card and keep a running total count. That running count is then converted to a true count. You make your next bet based on that true count being positive or negative.

What makes it one of the easier systems is that you’re literally tracking low and cards and high cards, and not the middle 8’s.  You just have to remember if it’s a low card, you add 1 and if it’s a high card, you subtract 1.

Sizing your bets

Because of the simple nature of the system, using the true count as a multiplier is considered good practice.  For example, if the running count is +4, your bet should be 4 times the table minimum.  Conversely, if the running count is +1 or less, your bet should remain the table minimum.

There is also a less aggressive method called bucketing.  This is where you would create a “bucket” that would be a range of counts, like (+3 or +4), (+5 or +6) or a larger range (+3 to +5), (+6 to +8) and each bucket has it’s own multiplier.  For instance, a true count that falls in the first bucket would have you multiply the minimum bet by perhaps 2 or 3, and not until the true count gets to the next bucket, would you increase the multiplier.

Ideally, sizing your bet should be done by whatever method fits your individual playing style.  By using a bet sizing system, it’s easier to disguise the fact that you’re counting cards because your bet sizes won’t vary wildly.

Final Thoughts

The Silver Fox Count system is a good system to try as a beginner. It’s simplicity makes it perfect to see if card counting will improve your win percentage.  With just a little bit of effort, you can lessen the house edge and that should at least make it more fun to play.

Play online at a some of my favorite casinos:

Vegas Casino Online Las Vegas USA Casino Sun Palace Casino High Country Casino Old Havana Casino Slots Plus Casino

The Revere Advanced Plus Minus system was developed and introduced by Lawrence Revere, in his book, “Playing Blackjack as a Business,” back in 1980.

It is a level one system, easy for beginners to learn, and yet effective in the proper situations.  The main drawback is that it was developed for single deck games, which are hard to find.

Revere actually has developed several card counting systems, and though this is called “advanced,” it is one of his most simple systems.

How it works

There are only 3 card values: -1, 0 or +1 and your count starts at 0 and continues until there is a shuffle, where you again start the count at 0.

It is a balanced system, meaning if you were to count down a deck, you would end at zero.

The card value chart is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+1	+1	+1	+1	0	0	-1	-1	-1	-1	-1	0

As with all counting systems, the higher the count, the more you should bet.  As the cards are dealt, you assign the above appropriate values to the card and keep a running total count.  You make your next bet based on that running count being positive or negative.

Because it is for single deck games, there is no need to consider a true count, because the running count and true count are the same when considering a one deck game.

You can increase the advantage of using this system by also keeping track of the aces.  Because it is best used with single deck games, you should be able to remember if any aces have been played.  If half the deck has been played and no aces have dropped, with a plus count, you stand a better chance of hitting blackjack and therefore should increase your bet.

Sizing your bets

Because of the simple nature of the system, using the running count as a multiplier is considered best practice.  For example, if the running count is +4, your bet should be 4 times the table minimum.  Conversely, if the running count is +1 or less, your bet should remain the table minimum.

Ideally, sizing your bet should be done by whatever method fits your individual playing style.  By using a bet sizing system, it will keep your wins and losses to maximums and minimums, while misdirecting the fact that you’re counting cards.

Final Thoughts

The Revere Advanced Plus-Minus system is another easy card counting system to learn that is great for beginners.  It is a good system to try as your first effort in card counting, which you can then use as a basis to advancing into more technical systems.

It is an old system that can still be reliable if you’re able to find a single deck blackjack table to play.

The Red 7 card counting-system is known to be very simple to learn, yet powerful enough to provide professional-level efficiency.

It was developed by blackjack guru Arnold Snyder and released in his book Blackbelt in Blackjack in 1983.

How it works

You definitely need to know basic blackjack strategy, because this system does take into consideration strategic moves at times.

In many other systems, running count is the determining factor on when to raise or lower your bet.  With Red 7, running count and elements of blackjack strategy are combined to make informed decisions.

There are only 3 card values: -1, 0 or +1 and your count continues until there is a shuffle, but your count will not always start at zero.

It is an unbalanced system (meaning if you were to count down a deck, you would not end at zero) and your starting count will depend on the number of decks being used.  That is known as the Initial Running Count or IRC.

The IRC with this system is figured at:

• One deck – starting count is -2
• Two decks – starting count is -4
• Four decks – starting count is -8
• Six decks – starting count is -12
• Eight decks – starting count is -16

The IRC formula for those starting counts is the number of decks x 2 and then make it negative.  Easy to remember.

Because this adjustment is made to start, there is no need for a true count, making it an easier system to implement, because of no necessary dividing.

The card value chart is:

2	3	4	5	6	red7/black7	8	9	10	J	Q	K	A
+1	+1	+1	+1	+1	+1/0	0	0	-1	-1	-1	-1	-1

While the thought of having to keep track of the color of 7’s that drop may seem scary, it will easily become second nature with a little practice.

As with all counting systems, the higher the count, the more you should bet.

Sizing your bets

The most common sizing with this system, is to use the running count as a multiplier.  For example, if the running count is +4, your bet should be 4 times the table minimum.  Conversely, if the running count is +1 or less, your bet should remain the table minimum.

Another way to size your bet is by tiers.  For instance, if your running count is +2 to +3, you’d bet 2 times the minimum.  If it’s +4 – +5, you’d bet 3 times the minimum.  You can determine the specific tier to choose, plus the multiplier, but you want keep it moderate.  Tier sizing is not as aggressive and therefore less detectable by the casino.

Snyder, the developer of the system, suggests that you can multiply your bet by 2 when the running count is 0.  Depending on the number of decks in play, that multiplier will increase as the count gets higher.   You can find his suggested chart here.

The general idea is to bet enough, with the advantage, to cover the cost of the smaller minimum bets or “waiting bets.”

The method you choose to size your bet should totally be determined by what fits your individual needs.  Using a system is beneficial in that it will keep your wins and losses to maximums and minimums, while misdirecting the fact that you’re counting cards.

Using blackjack strategy with Red 7 count

You first have to understand the pivot point.  This is the point, in card counting, when the deck becomes favorable to the player.  With most systems that start with a zero count, the pivot point is +3, +4 or +5. 

Basically, because the count starts at a negative number with this system, the pivot point is at +1, once into positive territory. The deck must become very favorable (a bunch of low cards must be dealt) before the pivot point is reached, with this system, leaving little chance to be fooled by a temporary swing of the cards.

Additional strategies to work with:

• If the running count is 0 or higher, stand with 16 against a dealer 10
• If the running count is 0 or higher, stand with 12 against a dealer 3
• If the running count is +2 or higher, stand with 15 against a dealer 10
• If the running count is +2 or higher, stand with a 12 against a dealer 2
• If the running count is +2 of higher, double down on a 10 total against a dealer ace
• In 1 or 2 deck game, if the running count is 0 or higher, take insurance
• In a shoe game, if the running count is +2 or higher, take insurance

If you know basic strategy, the above moves are against basic strategy, but the knowledge that there are more high cards at those times, changes the strategy.

Final Thoughts

The Red 7 Count system is another easy card counting system to learn that is great for beginners.  While it has factors that require knowledge of basic strategy, it shouldn’t deter you from learning it.  All card counting systems work best with basic strategy knowledge.

KO stands for Knock Out Count system and is another great system for beginners to learn because it is simple, yet effective.

It was developed in 1998 by Ken Fuchs and Olaf Vancura.

How it works

Like in the KISS systems, a running count is used instead of a true count, so there is no division necessary to get a true count.

There are only 3 card values: -1, 0 or +1 and your count continues until there is a shuffle, but your count will not always start at zero.

The starting count is determined by the number of decks being used.  That is called the IRC or Initial Running Count.  If you’re playing a single deck game, the count starts at zero, however if 2 decks are used, you start at -4, if 6 decks are used, the count starts at -20, and with 8 decks, the count starts at -28. 

The IRC formula for those starting numbers is: -4 x (Total Number of decks -1). So for 2 decks, it’s -4 x (2-1) = -4, and for 8 decks, it’s -4 x (8-1) = -28

The card value chart is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+1	+1	+1	+1	+1	0	0	-1	-1	-1	-1	-1

This is considered an unbalanced system because if you counted through an entire deck using those values, you would end up with +4.

As with all counting systems, the higher the count, the more you should bet.

Sizing your bets

A betting spread of 1 to 5 units is most commonly used with this system.  The running count is used as the multiplier of the table minimum bet.

For example, if you’re at a $5 minimum table and your card count is +3, your bet should be $15.  This keeps you at a minimum bet unless the count gets to +2, where you would want to bet $10.  The most you would bet would be 5 times the table minimum.

There are other common spread betting systems used with card counting that will take the multiplier from 1-6 or even 1-12 for 6-8 deck games.

The use of a spread betting system is beneficial in that it minimizes and maximizes your losses and wins, while helping to disguise the fact that you’re a card counter.

Final Thoughts

The KO Count system is one of the easiest card counting systems to learn and use, therefore great for beginners.  It works in a similar manner to many other systems, so it can be easily switched to from other systems.

It was developed to be simple and effective, which it is.  It is not as accurate as some other systems, but it is for beginners and if you’re looking for more accuracy, go with a more difficult system, there are plenty out there.  It will give you, to some extent, the ability to predict the upcoming cards.

There are actually 3 different Kiss systems, with Kiss 1 being the most simple.  KISS stands for Keep It Short and Simple.  These systems are said to be great for beginners because they are easy to learn.

Fundamentals of the KISS systems

The most appealing part of these systems is that a running count is used instead of a true count.  This means there is no heavy division necessary to keep track of the cards.

There are only 3 card values: -1, 0 or +1. Your count starts at zero and continues until there is a shuffle, when your count resets to zero.

These are classified as unbalanced systems, which means if you count down a deck, you won’t necessarily end at zero.  The unbalance occurs because there is an uneven number of positive and negative valued cards. (in Kiss 1, 4 cards count as +1, only 3 cards count as -1)

As with all card counting systems, the goal of the KISS systems, is to help you know when you should increase your bets, because there is a greater chance to hit a blackjack.  If the count is high, bet more, if the count is low or negative, stay at the minimum bet.

Kiss 1 System

This is the simplest of the 3 systems because you have to track the least number of cards.

The card value chart is:

Red2/Black2	3	4	5	6	7	8	9	10	J	Q	K	A
0 /+1	0	+1	+1	+1	0	0	0	0	-1	-1	-1	0

If it is a red 2, the value is 0, if it’s a black 2, the value is +1.  That may be the most difficult thing to remember.

The only cards you need to keep track of are: Black 2, 4, 5, 6, J, Q, & K.  This system eliminates almost half the deck, making it easier to keep a running count.

It doesn’t matter how many decks are used, but it does work better with fewer decks.

Kiss 2 System

If you’re looking for a little more accuracy, the Kiss 2 will give you that by adding 2 more cards to keep track of, being 3’s and 10’s.

The card value chart is:

Red2/Black2	3	4	5	6	7	8	9	10	J	Q	K	A
0 /+1	+1	+1	+1	+1	0	0	0	-1	-1	-1	-1	0

It remains an unbalanced counting system because you’re only tracking black 2’s.

If you are comfortable with Kiss 1, it shouldn’t be too difficult to step up to the next level of Kiss 2.

Kiss 3 System

As suspected, Kiss 3 increases the accuracy even more because it add’s 7’s and Aces to the count.  A seven will add 1 to the count and an ace will subtract 1 from the count.

The card value chart is:

Red2/Black2	3	4	5	6	7	8	9	10	J	Q	K	A
0 /+1	+1	+1	+1	+1	+1	0	0	-1	-1	-1	-1	-1

As you can see, you have to keep track of the most cards with this system, so it would be more difficult to implement, but also the most accurate.

This is the version that is best suitable for multiple deck games.

Sizing your bets

An easy rule of thumb, or suggestion, about sizing your bets with these systems is to use the running count as a multiplier of the table minimum bet.

For example, if you’re at a $5 minimum table and your card count is +3, your bet should be $15.  This keeps you at a minimum bet unless the count gets to +2, where you would want to bet $10.

Using this method should keep you under the radar of any “eye in the sky” surveillance hunting for card counters, because your bet range should not have wild swings.

Final Thoughts

From the name alone, you would guess this should be an easy system for beginners to use and it is.  It’s fast and simple to learn, with not much math at all.  Using the Kiss system changes the house advantage by a minimum .48%, enough to make a positive difference in a good session of blackjack.

With 3 versions of the Kiss system, you as a beginner, can start at whatever level you want.  You decide how serious you want your game play to be and you can decide how much of an advantage you want to create for yourself.  The KISS systems are very simple, and depending on the level, can be very efficient and effective.

As you might imagine, the Hi-Opt II system takes the Hi-Opt I to the next level, with new point values that make it more accurate and more efficient.

It was created by Lance Humble and and Julian Braun for the more advanced player.  It involves a little more work (math) to keep track of the count, but that’s why it’s more effective.

Difference between Hi-Opt II & Hi-Opt I

The main difference is the range of values. In Hi-Opt II, the card values are set at -2, -1, 0, +1, or +2, making it harder to track the count.  An additional difference is that the 2 and the 7 have values in the Hi-Opt II system, but not in the Hi-Opt I system.

How it works

Because it is a balanced system, you will start your count at zero.  As you look at the chart below, there are not multiple cards that cancel each other out, like in Hi-Opt I.  Because of that, you definitely spend more time calculating the running total as the cards are dealt.  You will definitely have to focused on the table and the cards.

Each card is assigned a value of -2, 0, or +2.  The chart of values is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
+1	+1	+2	+2	+1	+1	0	0	-2	-2	-2	-2	0

You need to keep track of the true count, the running count divided by the estimate of the remaining decks. A true count is preferred over a running count because it can reduce the house edge by that fraction of a percentage more that can make a big difference in high level play.  A true count better reflects the nature of the remaining deck.

Because the system is more accurate, once the true count becomes positive, you can start to increase your bet and as long as it stays positive, bet more than minimum allowed.  

The advantage of counting cards is knowing when it’s beneficial to make a larger bet.  The higher the positive count, the more your bet should be.  Once the true count gets down to zero or less, you drop back to making the minimum bet.

Reckoning Aces

Although aces are given a value of zero for the running count, you still want to keep track of them, which is another reason this system is considered advanced and more difficult.

Keeping track of aces can be a vital part of this system. If you consider there are 24 aces in a 6 deck game (6 x4) or 32 aces in an 8 deck game, and you have a very high true count, combined with a deck where very few aces have dropped, there is a higher chance of hitting a blackjack.  In that case, you want to be sure to be betting bigger.  

Final Thoughts

The Hi Opt II system is not for a beginner player. It requires more concentration and more additional steps than Hi-Opt I for instance.  To use this system, you should already have a clear efficiency in basic card counting.  If you are proficient in basic card counting and looking for a more precise method, check this one out.

The origin of the Hi Opt I (aka Highly Optimum) begins with Carl Cooper and Lance Humble, in the 1980 book, “The World’s Greatest Blackjack Book,” making a few adjustments to the Einstein count.  Humble also teamed with Julian Braun to make a few more adjustments and create the more complex Hi-Opt II count.

The Einstein count was developed in 1968 by Charles Einstein as an improvement to the very popular Edward Thorp Hi-Lo count. Therefore Einstein is basically credited with the formulation of the Hi-Opt I count.

There is more math involved, along with additional rules and card value changes that make it more accurate than the Hi-Lo count system.

How it works

Because it is a balanced system, you want to be sure to start your count at zero.  It also works best for single deck games. As each card is dealt, you change your count according to the value assigned to the cards.

Each card is assigned a value of -1, 0, or +1.  The chart of values is:

2	3	4	5	6	7	8	9	10	J	Q	K	A
0	+1	+1	+1	+1	0	0	0	-1	-1	-1	-1	0

You need to keep track of the true count, the running count divided by the estimate of the remaining decks.

You start betting with the minimum bet and once your true count becomes +1 or better, you can start to gradually increase your bet size.  Of course you want to keep your bet increases to a moderate level, so as not to draw attention to the fact you feel the cards are favorable.

When the count is positive, your chances of hitting a blackjack are increased and therefore you want to bet more, to take advantage of the 3:2 blackjack payoff.  Obviously when the count is negative, bet the minimum because it unlikely you’ll hit a blackjack.

Ace tracking is not really a part of this system, but if you haven’t seen any aces dealt, leaving the deck high in aces, you can figure there is definitely a better opportunity for a blackjack and therefore make your bet higher.

System Classification

It is a moderately advanced balanced system.  If you were to count down a 52 card pack of cards, it would start and end with 0.

Final Thoughts

The Hi Opt I system is not hard to master, with the toughest part being able to correctly figure out your true count. It is because of the extra math involved, that beginners leave this system for the more advanced players who appreciate the extra advantage gained.  The most probable reason it is not more highly used, is because it was originally developed to be used with single deck games, which are hard to find now.