Shuffling a pack of cards isn't as easy as you think, not if you want to truly randomise the cards. Most people will give a pack a few shuffles with the overhand or riffle methods (where the pack is split and the two halves are interweaved). But research has shown this isn't enough to produce a sufficiently random order to make sure the card game being played is completely fair and to prevent people cheating.
A shuffle function is provided. After the shuffle, dealing should consist of taking cards from the front of the shuffled deck array and putting them in the dealer/player hand array. Hitting would also pull cards from the front of the shuffled deck array. Required Functions. Call the shuffle function. Deal cards to the player and dealer. Blackjack Play even the classic game of Blackjack in JavaScript! (You might also know it as '21') The object of the game is to get the closest to 21. If you get higher than.
As I wrote in a recent article about card counting, not having an effective shuffling mechanism can be a serious problem for casinos:
Players have used shuffle tracking, where blocks of cards are tracked so that you have some idea when they will appear. If you are given the option to cut the pack, you try and cut the pack near where you think the block of cards you are tracking is so that you can bet accordingly. A variant on this is to track aces as, if you know when one is likely to appear, you have a distinct advantage over the casino.
JavaScript Problem: Shuffling an Array - Duration: 11:27. All Things JavaScript. JavaScript HTML Game from Scratch Blackjack: JavaScript game introduction - Duration: 4:30. I am playing blackjack with unified gaming software. They claim they do not shuffle after every hand especially in the six deck, yet I have never seen it stop to shuffle. When I called the company to ask they said it is indicated when shuffling but I have never seen anything written on the screen that it is shuffling.
So how can you make sure your cards are well and truly shuffled?
To work out how many ways there are of arranging a standard 52-card deck, we multiply 52 by all the numbers that come before it (52 x 51 x 50 … 3 x 2 x 1). This is referred to as '52 factorial' and is usually written as '52!' by mathematicians. The answer is so big it's easier to write it using scientific notation as 8.0658175e+67, which means it's a number beginning with 8, followed by 67 more digits.
To put this into some sort of context, if you dealt one million hands of cards every second, it would take you 20 sexdecillion, or 20,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000, years to deal the same number of hands as there are ways to arrange a deck of cards.
You would think that it would be easy to get a random order from that many permutations. In fact, every arrangement is, in a sense, random. Even one where the cards are ordered by suit and then rank could be considered random. It is only the interpretation we put on this order that would make most people not consider it random. This is the same as the idea that the lottery is less likely to throw up the numbers one to six, whereas in reality this combination is just as probable as any other.
In theory, you could shuffle a deck so that the cards emerged in number order (all the aces, followed by all the twos, followed by all the threes and so on), with each set of numbers in the same suit order (say spades, hearts, diamonds and clubs). Most people would not consider this random, but it is just as likely to appear as any other specific arrangement of cards (very unlikely). This is an extreme example but you could come up with an arrangement that would be seen as random when playing bridge because it offered the players no advantage, but wouldn't be random for poker because it produced consistently strong hands.
But what would a casino consider random? Mathematicians have developed several ways of measuring how random something is. Variation distance and separation distance are two measures calculated by mathematical formulas. They have a value of 1 for a deck of cards in perfect order (sorted by numbers and suits) and lower values for more mixed arrangements. When the values are less than 0.5, the deck is considered randomly shuffled. More simply, if you can guess too many cards in a shuffled deck, then the deck is not well shuffled.
Persi Diaconis is a mathematician who has been studying card shuffling for over 25 years. Together with and Dave Bayer, he worked out that to produce a mathematically random pack, you need to use a riffle shuffle seven times if you're using the variation distance measure, or 11 times using the separation distance. The overhand shuffle, by comparison, requires 10,000 shuffles to achieve randomness.
'The usual shuffling produces a card order that is far from random,' Diaconis has said. 'Most people shuffle cards three or four times. Five times is considered excessive'.
But five is still lower than the number required for an effective shuffle. Even dealers in casinos rarely shuffle the required seven times. The situation is worse when more than one deck is used, as is the case in blackjack. If you are shuffling two decks, you should shuffle nine times and for six decks you need to shuffle twelve times.
Many casinos now use automatic shuffling machines. This not only speeds up the games but also means that shuffles can be more random, as the machines can shuffle for longer than the dealers. These shuffling machines also stop issues such as card counting and card tracking.
But even these machines are not enough. In another study, Diaconis and his colleagues were asked by a casino to look at a new design of a card shuffling machine that the casino had built. The researchers found that the machine was not sufficiently random, as they simply did not shuffle enough times. But using the machine twice would resolve the problem.
So next time you're at a casino, take a look at how many times the dealers shuffle. The cards may not be as random as you think they are, which could be to your advantage.
Overview
Summary
Have your own HTML Blackjack Game on your site, to increase visitor engagement and fun. In a recent survey, 74% of users said the well finished game contributed 'moderately or significantly' to the fun of the site.
With this package, you get a license to use this blackjack game on all your sites.
The blackjack script is written in pure HTML5, Javascript, jQuery and CSS, making it extremely easy to integrate into your existing or new site, and working flawlessly on mobile devices. There is no use of Flash or Java.
Features
- 100% HTML and Javascript code. Fully responsive to every resolution and device. Works on every browser.
- Smooth jQuery animation.
- Fully customizable. You can very easily change the images, sounds, animations, rules and payouts to suit your needs.
- Extremely flexible deck and dealer's shoe configuration. Have multi-deck shoes with configurable shuffle indicator positions, or single-decks games that go for multiple hands without re-shuffling, to challenge card counters.
- Cheat-prevention measures to avoid getting fraudulent complaints from your customers.
- Over 1 million hands dealt to date, resulting in millions of dollars in profits for the different sites that host it. On a monthly average, there's a new hand played every 25 seconds.
Package
The package includes the full source code for the entire blackjack game, including HTML, CSS, Javascript and PHP code (other server languages optional too). It also includes extensive documentation on how to implement the game in your own site, and how to customize every bit of it.
Only a very, very basic knowledge of PHP and CSS is necessary to add this to your site. If you don't have your own programmers, we can do this for you for a very small fee.
Finally, we also offer a custom-design option for an extra fee, in which we get you in contact with our graphics designer, and you get the design that you need, ready to plug into your site.
Buy this blackjack game today, or contact us with any questions.
F.A.Q.
- Can I use this blackjack game in my Wordpress site?Open or Close
Yes, it's quite easy to integrate this into Wordpress by simply modifying the site templates to add the HTML code, and then adding the extra CSS and JS file. Casino tuscaloosa al.
- Can anyone implement this?Open or Close
You will need very minimal knowledge of PHP and CSS to implement this on your site. Any junior programmer can do it. Alternatively, you can hire us to do it for you, for a very small extra fee.
- Is it a one-time payment?Open or Close
Yes, a one time payment of our license fee gives you our full source code, and allows you to use the blackjack game in as many sites as you own.
- How can I customize this game for my site?Open or Close
You can very easily change everything that your visitors will see about the game. All images and sounds, the rules and configuration, maximum and minimum bets, payouts, the details of the animation, etc. The package you will buy includes extensive documentation on how to modify all of these, and our support team will also help you and answer all your questions.
- Can I have non-monetary prizes?Open or Close
Yes, some of our customers use their blackjack game to challenge visitors to reach a certain bankroll, and receive a prize if they do, such as a t-shirt, or a store discount. In those cases, there is no actual money exchanged, it's just a fun tool to engage their visitors!
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- Does it work with Bitcoin / Litecoin / other cryptocurrencies?Open or Close
Yes! Basically, you can integrate this with any payment / credits mechanism you can think of, be it regular money, Bitcoin, tokens, anything!
- Do I get the full source code?Open or Close
You get absolutely everything, in full un-minified, non-obfuscated form. All the PHP, HTML, CSS and Javascript, which you can modify as much as you wish, along with extensive documentation on how to do so.
What our previous customers say
'Huge increase in customer engagement'
From start to finish Daniel was the perfect man for the job. We were setting up a fun virtual games website and communicated a few game ideas to Daniel. The animations were smooth, the games felt fast, and they were able to handle a large number of users.
Our customers were consistently thrilled with the way the games worked, and the games were a big success immediately after launch. In a recent survey 74% of users said the well finished games he programmed contributed 'moderately or significantly' to the fun of the site.
'I highly recommend Daniel's work.'
I found Daniel to be an extremely knowledgeable and reliable developer who helped us integrate his games into our retail platform. Daniel made himself available for our questions and gave assistance whenever we requested.
I highly recommend Daniel's work to anyone who wishes to be successful the first time out. His insight is invaluable.
Javascript Blackjack Shuffle Games
'Very professional service'
'Huge increase in customer engagement'
From start to finish Daniel was the perfect man for the job. We were setting up a fun virtual games website and communicated a few game ideas to Daniel. The animations were smooth, the games felt fast, and they were able to handle a large number of users.
Our customers were consistently thrilled with the way the games worked, and the games were a big success immediately after launch. In a recent survey 74% of users said the well finished games he programmed contributed 'moderately or significantly' to the fun of the site.
'I highly recommend Daniel's work.'
I found Daniel to be an extremely knowledgeable and reliable developer who helped us integrate his games into our retail platform. Daniel made himself available for our questions and gave assistance whenever we requested.
I highly recommend Daniel's work to anyone who wishes to be successful the first time out. His insight is invaluable.
Javascript Blackjack Shuffle Games
'Very professional service'
Javascript Blackjack Shuffle Game
Daniel is a true professional that provides exceptional value. He kept his word on both pricing and beat his estimated delivery time. I definitely will be working with him on projects in the future.
