This Knol is part of the. Click for the second lesson. Related Java chess programming tutorial: ““ Popular Religion-Science Philosophy Knols of Spiros Kakos. Main Thesis: (why illogical is logical!). Introduction Programming is a simple thing, despite of what you may have heard. However many people feel intimidated by modern computer technology and do not even consider trying to program an application of their own because they are afraid it requires too much knowledge. The truth is that the only things required for you to program is the will to work and learn and a structured way of thinking.
No quantum mechanics, no nuclear physics, no relativity theory or advanced mathematics required Great programmers are people who just like to experiment. Great programmers are people who just try different new things on their computers until they find what “works” (and then have other people treat them as “gods” because they know it). This is the first article of a series of articles showing how to program a full-featured chess program in a modern programming language.
Chess programs some of the most complicated applications existing and developing one can be intimidating to many experienced programmers. This article will show that this is NOT the case. The basis for this Programming a Chess Program for Dummies tutorials is the “Huo Chess” program. The final deliverable will be something like the program shown in the following figure. Huo Chess – The program we will code Huo Chess is one of the smallest open source chess applications. It is an application that I have personally developed and distribute as fully open source via many channes in the Internet. One can dowload it for free from the MSDN Code Gallery, or its.
In the series I will analyze how one can program the computer to play chess. The final “deliverable” will be the full Huo Chess program as it can be found in the Internet. Note: An intermediate / advanced programmer can go directly to the above links and download the Huo Chess source code so as to study it directly. Please contact me for any questions on the code or the algorithm either via email or via comments in this Knol. However, even though the source code of my chess is heavily commented, starting looking directly at the full program source code without first reading the lessons I have posted here at Google Knol is not advised for beginner programmers. Method of teaching The method I will use for teaching you how to program is by example.
The “try to do something and see what happens” may sound like a bad method, but it is actually the best when it comes to computers programming. As long as you have kept a backup of all your valuable files, you must and should try anything with programming if you really want to lern! That is why I will show practical steps you need to follow and I will guide you through every stage of the programming process, without first giving a 100-page lecture on the theory or the basic pronciples of programming. You will be taught the theory you need to know as we progress through the steps of building the chess game.
That method is the method actually used by programmers in the 1980’s. We used to experiment with new things, try new techniques and learn from our mistakes. There is no better way of learning than experimenting and doing mistakes. You will never learn from something you did right in the first place! The language of choice is C# and the tool we are going to use the Microsoft Visual Studio. However please note that I have created and distributed versions of the “Huo Chess” also in C and in Visual Basic. Feel free to seach for the free source code in the Internet (I am now trying to create a Commodore version).
Getting started The first thing you need, is the tool with which you will program. You can download the Microsoft Visual Studio 2008 – Express Edition from the respective site. The “Express” editions of MS Visual Studio are completely free to download and they include all the programming tools and features a novice, intermediate or even an advanced programmer needs. After you donwload it, installing it is what is keeping you from programming your first game application! Installing Visual Studio After you have downloaded the MS Visual Studio – Express Edition, you will have to install it. Installing the Visual Studio is no more complex than the installation of any other program.
You just double-click the file you downloaded and the installation will automatically begin. Normally, the setup will install the Microsoft.NET Framework if it isn’t already installed in your computer (the.NET Framework is required for the Visual Studio to operate – Huo Chess requires.NET Framework 2.0 or above to work) and the Visual Studio.
An icon with the characteristic sign of the Visual Studio will appear in your desktop. Using Visual Studio Double-click the icon of the Microsoft Visual Studio to begin programming. The Integrated Developement Environment (IDE) of the Visual Studio will appear and you are now ready to make your application. Create a new project First you need to create a new project. Go to the menu and click File - New - Project. From there you must choose the language in which you will develop your program. We will write our chess in C# so we must select Visual C# - Windows - Console Application (later we will show how we can also program the same game in C or other languages).
A console application is an application with no graphics. We will start developing our chess game Artificial Intelligence engine as a console application in the beginning and afterwards, when the computer can think and play chess, we will add graphics (that will be the final step in this programming tutorial series). Name the new project “Huo Chess tutorial” and press OK. Visual Studio will do its work and create all the initial things required for you to start developing.
The project is by default saved in a folder with the name you specified, that resides in the My Documents/Visual Studio folder. Start developing After you have created your project, you can start programming. The window will initially look like this. Variables. Functions.
Classes All programming uses these three elements and if you master them properly then you can do everything. I will try to explain these elements in summary in the lines below. Variables The variables used in a program are the elements which store values, that are used in the program.
Variables come in many types depending on the type of data they will be used for. For example you can declare an integer variable to store integer values, or a float variable to store numbers with a decimal segment, or a String variable to store text. We will declare our variable in the class program by entering the code public static String mPlayerColor; as seen in the following figure.
Some clarifications are needed here: Every command in C# must end with semicolon (;). Secondly, we declared the variable as public which in short means that it will be visible from every part of our program (the opposite, private variables can be accessed only inside the function/class we declare them in). The static keyword should not concern you at the time (it actually means that only one instance of the variable can be created as the program executes, but we wll have more on that later on the tutorial series). You can then define the value of that variable by hard-coding it in your program. Try to enter mPlayerColor = “Black”; in the Main function of your program and then print it to screen with the command Console.WriteLine(mPlayerColor); as seen in the next figure (in fact I have added a Writeline command more as you can see).
Compile the program The first thing you must do when programming a change in your program is to save your work. Select File - Save All to save all the changes you made. After you have saved the program, you may want to execute it in order to see what you have done. Before a program is executed, it must first be compiled. Compiling a program means converting the programming language file you just saved to a form readable by the machine (i.e. Machine language, which is comprised of 010101’s).
Select Build - Build solution to do that as illustrated in the following figure. If you have followed the steps above, no errors will exist and the compiler will notify you that the solution was successfully built. You have just created your first program which includes declaring a variable and printing it to screen. Note about the graphics The graphics of the chessboard will be added at the final stage of the project (we will use the XNA Framework, but you don’t need to know anything about it at this point). Right now we will focus on developing the chess engine algorithm which is the most difficult part.
That is why we started by developing a console application (i.e. An application without graphics). We will worry about the graphics after we have created a fully functional chess AI engine. Let us now say some things more about functions and classes as promised. Functions Functions are code segments which require some input to perform a specific action and produce a specific result. For exaple you can have a function that adds two numbers called Addnumbers. The code for that function will look something like that (you do not have to code anything in your Huo Chess project now, this is just for theory education purposes): int Addnumbers(int Number1, int Number2).
MyAddResult = Addnumbers(5, 6); The above code calls the function Addnumbers by giving it the input of number 5 and 6. The result will be the function to return the value of 11 (= 5 + 6) which we have allocated to variable myAddResult. Object Oriented Programming Functions and variables can be used in creating objects. These objects are called classes and are the cornerstone of the Object Oriented Programming (OOP) you may have heard many times before.
Classes But how do you create and use objects? First, you have to declare the class of the object. For example, if you want to create an object called ‘Blue Calculator’, you must first create and declare a class of objects called Calculator. Define the parameters of that class: the variables it will be using (i.e. The color of the calculator, the numbers which the user will enter in the calculator by pressing the buttons + the result that the calculator will print on its screen) and the methods (or functions) that the calculator will utilize in order to reach the result (i.e. Functions for adding numbers, subtracting number etc).
// End of class definition The two slash (//) text are comments. Whatever you write after these slashes is not taken into account by the compiler. It is considered best practice to write comments in your code. After you have properly declared your class of objects, you can create as many objects of that class you like and use them in your program. For example you can create a new blue color calculator by writing a command that could look something like that: Calculator mycalculator = new Calculator(Blue); You can then use the member-variables and member-functions of the calculator with commands like: Integer no1 = 2. // this should print ‘27’ in the screen The specific commands again depend on the programming language you use, but you get the meaning. It is all too easy: Declare class = Create new object of that class = Manipulate / define parameters of the new object = Use member functions of that object to generate the result they are designed to generate.
It may be difficult for you to grasp, but ALL programming in ANY language (C, C#, Visual Basic, Java etc) are based on that logic. What is more, the languages themselves have some ready-made classes that you can use to develop your programs! For example, Visual C and C# in the Microsoft Visual Studio has a stored class for Buttons.
To add a button to your application, you just write. Mybutton.color = Blue; You don’t have to reinvent the wheel! That simple (and I think you understand what the second command does, without telling you)!
I keep repeating myself, in order for you to stop fearing the unknown realm of programming and juststart programming! The ready-made classes (or even simple functions) are usually stored in packets called ‘libraries’. Add the library you want in your program and them just use any class / function it contains. Classes you already use without knowing it You may think that all the above have nothing to do with the code you just wrote.
But you would be wrong. Your program, even at this initial stage, uses many classes without you knowing it! Actually Microsoft has developed some classes that facilitate programming for Windows and you are using these classes with the “using” statements in the beggining of your code. You do not have to know more details about that now, just be aware that you can program your chess because someone else have already developed and implemented a great number of classes in order to helo you do that. A good example of classes you already use if the Console command you wrote in order to print the player’s color.
Remember that the command looked something like that: Console.WriteLine(mPlayerColor); The above code actually uses the class Console and calls one of its member-functions: the WriteLine function (that is why the dot is required: to call members of classes as we said above). That functions requires input: the text that you want to display. That is what we write in the parenthesis! Intellisense The Visual Studio has embedded features that help you know which are the members of the various classes and how to use them. So when you write “Console” and then enter a dot, the Intellisense of VStudio produces a list with all available member variables and functions of that class. You will find yourself more comfortable with the use of Visual Studio and C# only after you have tried to use many of the functions appearing in that list on your own and see what happens. Remember, experimenting and doing mistakes is the only way to learn!
Get user input In a similar way to printing something to the screen, you can get user input. You will find that very useful when you want the user to enter his/her move for the chess game. In this point, we will require the user to enter his color of choice by using a function similar to Writeline: the Readline. See the figure below on how that can be accomplised.
The code is simple and straightforward. You print instructions to the screen and then read the input from the user. When the user presses “Enter”, the value he entered is allocated to the mPlayerColor variable which is then printed on the screen. Next lesson In the next lesson we will learn how to instantiate the chess board, build the Artificial Intelligence engine of the program and the program’s user interface structure. Until then, try to enter the following code in the program: if (mPlayerColor “Black”). Console.WriteLine(“Please enter your first move!”); Save, compile and run the program. You will see that if the player enters “Black” the program “plays” a first move!
Well, actually this is not the way we will use to develop our AI (using “if” statements is not the way to make the machine think), but what I want to note and emphasize here is the simplicity of programming in general. All you need is will to learn!!!
What we have accomplished In this first lesson, we have accomplished many things which are listed below:. Created our first project in MS Visual Studio.
Learned how to save, compile and execute the project via Visual Studio. Learned how to print text on the screen.
Learned how to use variables and read user input from the user. Gave a look at our first code structure command (“if” command). Learned about functions and classes. Understood the basics of Object Oriented Programming. Until the next time, happy coding and experimenting! How to Develop a Chess Series updates.
Update 2009-06-04: Due to other obligations the next lesson is not going to be published as soon as I expected to. However I am in the process of writting it and it WILL be published as soon as I can. Update 2009-07-30: The new lesson of the series is now published. Update 2011-09-29: The with the chess algorithm analysis is now published!
There are many ways you can go. Most of the chess engines rely on approved chess theortical investigations and have quiet a large bibliothek of them to evalute to first 12 moves of a game. This is why some of them get pretty confused when doing unusual things, which was a winnig approach in the older generations of chess enginges. Bascially it's the taks of encoding the rules of the game and then, of course, find an algorithm to find the best solutions.
For that again there are many different approaches, linear optimization is one but has its impacts as the game is rather complex and solving systems of linear inequations is both a memory and cpu consumig task and cannot be multithreaded properly. Another approach is the use of genetic algorythms, which imho fits best to this kind of problem domain as it's encoding of the rules and possible strategies into the genstructer and rating the individuals of an population in the fitness function. This can be spread of multiple threads pretty well, but this approach also has its own impacts, as the required population size will be high which obviously again is a memory consumption. There are existing solutions such as the metioned stockfishchess engine or, which provide an android api and many resources on the web about how to do it are also available in the net such as (a starting point). Also you could try to port an existing chess engine for linux to android such as which should't be to heavy as android is Linux -based and the android replacement for glibc is mostly compatible. Or you could try a Java chess engine such as and port it to android, too.
Just search for open source chess engine and you will find many existing solutions. 'The only thing ' is pretty amusing in this case, because the main part of writing a chess game is to write the Ai for it.
Another approach could be to use a chess server and communicate with it so that your player can connect to the net and play agains others.
Consyst is a dynamic IT company specialized for more than 20 years in information technology architecture and in the development of innovative productivity tools for businesses. Rep, the product at the core of its mission, can significantly accelerate the development cycle of applications and services by reducing the duration of the design, coding, testing and maintenance stages. Rep uses a model-driven approach supported by a powerful model execution mechanism.
Essential complement to Visual Studio® (Microsoft®), Rep includes: an open and centralized model that is used to define, contain and manage all the metadata of an application set; toolkits and application frameworks that implement various flavors of the presentation layer; and specialized assistants that simplify the creation of applications and services for a variety of architectures and technologies. These elements provide a very high automation level, which enable businesses to focus their development efforts on where it counts: their business rules. Member 13768865 8-Apr-18 13:42 8-Apr-18 13:42 Thanks for sharing the code Jacques! I am new to C# and am taking courses in C# and Unity. My goal is to eventually create a VR Chess game to practice my openings. (The whole reason for studying programing and Unity).
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Hopefully loading a custom PGN opening repertoire. I have some great ideas but implementing them will remain to be seen. Right now I can barely figure out how to represent the chess board, since I am a super beginner, but I am hoping my persistence will prevail. Any suggestions?
Carlos Cano 24-May-17 3:30 24-May-17 3:30 Event 'SrcChess Game' Site 'SrcChess Location' Date '2017.05.24' Round '1' White 'Player 1' Black 'Player 2' Result '1-0' WhiteType 'human' BlackType 'program' TimeControl '?:9:' 1. Bxh6 gxh6 12. O-O-O Rg8 14. Nde2 hxg4 20. Rgh2 exf4 24.
R1h7+ Kf8 26. Ng6+ Qxg6 31. Qxg6 Bxd5 32.
Chovanm 20-Feb-17 11:04 20-Feb-17 11:04 Hello Jacques, It is Excellent Chess program! I played 5 quick games on 'More Advanced' level but sorry always win. But I am former chess player. I was also average VB.Net (HTML5,JavaScript,PHP.) programmer so I will look on your code. Just need find little time p.s. There are many good chess programs like Fritz, Rybka, ChessMaster. No one use UI in HTML5, Angular and Node.js.
These are desktop programs not WEB applications. Congratulation to your outstanding work! Member 3014312 20-Feb-17 7:49 20-Feb-17 7:49 Hi, I am quite amused that people are still doing UIs using old TECH. Why didn't you do a UI in HTML5, Angular and Node.js for example?
Here is a challenge for you then. Or for anyone who wants to give it ago if this authour provides the full source code. I don't touch on anything that isn't HTML5 but it's a pitty because I would love to dive into all the code and play with it a bit. But you really put me off by using such an old tech stack. I guess it's because you don't have the skills? Am I right to say that? HTML5 with node and Angular UI?
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By the way why Angular and not React for example? It is a C#/.NET program that has been developed for a long period of time (as the author admits), probably years, maybe before HTML5 was out there. C# and.NET are still relevant (nothing old here, especially if you check around how many advertisements for jobs ask for such skills).
What's your proposal? Rewrite everything in JavaScript and Node with an HTML5 frontend or keep the core computations in C# exposing them through a REST Service and rewrite the front-end in HTML5? If you ask for a complete rewrite in Node, then why not in Python or Ruby?
I mean what's the point to rewrite in Node, just to use the latest coolest technology? Why don't you touch anything that isn't HTML5? Is it because you don't have the skills or just a matter of preference? Cause if it is just a matter of preference, then why don't you try reading an article about a chess program in JavaScript? On the other hand, if it is just a matter of skills I bet it will help you if you expand your programming knowledge. Being fluent in more than one language is a good thing. Why don't you do try rewrite it and submit an article about it?
Look, I have coded in RPGII, C, C, C#.NET in 2002 beta version and up to.Net Core, Java, Ruby on Rails, PHP, Go, Python, and a few others. So it is not about the language! It is about evolving! UIs are now done in HTML5/JavaScript so I don't need to give any justification because if you are not doing it then there isn't any point in having a conversation! I am a CTO, I hire lots of people, so I know what skills I need and what most company need in these days if they have a sensible CTO/CIO so anyone producing UIs in other languages must get their skills up-to-date. I can't be bother looking at code done in obsolete tech to be trully honest! I know enough of new tech stack so I am not interested in diving into old code to translate all into the new tech stack.
Why would I be doing the job that this authour should have done in the first place! Node.js can be use as micro-services only and still using.Net at core if you wish so or a mix of.Net, Java, PHP. Node.js can create an ecosystem of micro-services that can use any back-end tech stack. Here is a good article. It is an old code (the article was first posted 8 years ago) as a personal project.
The author had the will to share it with us and keeps updating it from time to time. So, the entire discussion of using a more up to date technology stack based on HTML5 / JavaScript is pointless.
Besides he states it is a chess program developed in C#, and I guess the point here is the core of it rather than the presentation layer. I don't see why he needs to redevelop an 8-year-old program using a new presentation layer.
Besides html5 is just one of the technologies used to create UIs these days. Even Electron which is something very promising for desktop UIs using HTML is not widely adopted yet.
Computer Chess Algorithm
A lot of modern programs still use technologies like WinForms etc. I know that more and more solutions move to the web these days, I am currently developing for the web using Node/JavaScript/HTML5, but I don't see why I should ask for everything to be redeveloped in this stack. Besides, I don't think that this is the point of this article.
There are several things that could be improved with your code:. Lsi cachecade keygen generator. Use the formulation. This will eliminate the code duplication of your minsearch and maxsearch. Free myxer ringtones. Use pruning. This will double your search depth for a given amount of search time. Use in combination with a.
Algorithm For Chess Program Download Windows
The iterative deepening will gradually refine your search result (so that you can stop searching and make a move at any time), and the hash table will let you avoid duplicate work if you encounter transpositions in the game tree.
A general strategy in game algorithms is the strategy, augmented with. The minimax algorithm finds the best move, and alpha-beta pruning prevents it from going into branches of the game tree that cannot produce a better result than previous branches already have. However, the chess game tree is too large to be completely examined. That is why computer chess engines only examine the tree up to a certain depth, and then use various methods to evaluate the positions. Many of these methods are based on heuristics. Also, a serious chess-playing program will have a library of openings so that it can play in the beginning by just consulting that library and not having to examine the game tree.
Finally, many end games are completely solved, and these are also programmed in as a library. It should be noted that the position evaluation function is probably the single most important aspect of a chess engine when determining its strength. In fact, its probably the only area where there is novelty in most chess engines now adays. For example, the Rybka position evaluation function was designed over 5 years (if irc) by very strong players. In a sense the evaluation function is what gives the computer intuition about the chess position, a fundamentally important part of any chess game and orthogonal to other issues like tactics in the game. – Jan 9 '10 at 21:05.
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