stockfish | Integrates the Stockfish chess engine with Python | Artificial Intelligence library

 by   zhelyabuzhsky Python Version: 3.28.0 License: MIT

kandi X-RAY | stockfish Summary

kandi X-RAY | stockfish Summary

stockfish is a Python library typically used in Artificial Intelligence applications. stockfish has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can install using 'pip install stockfish' or download it from GitHub, PyPI.

Implements an easy-to-use Stockfish class to integrates the Stockfish chess engine with Python.
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            kandi-support Support

              stockfish has a low active ecosystem.
              It has 185 star(s) with 43 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 8 open issues and 50 have been closed. On average issues are closed in 132 days. There are 9 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of stockfish is 3.28.0

            kandi-Quality Quality

              stockfish has 0 bugs and 0 code smells.

            kandi-Security Security

              stockfish has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              stockfish code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              stockfish is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              stockfish releases are available to install and integrate.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              stockfish saves you 138 person hours of effort in developing the same functionality from scratch.
              It has 345 lines of code, 45 functions and 6 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed stockfish and discovered the below as its top functions. This is intended to give you an instant insight into stockfish implemented functionality, and help decide if they suit your requirements.
            • Get a list of top moves .
            • Initialize the stockfish .
            • Get the evaluation for the FEN .
            • Try to get the best move .
            • Set the fen position .
            • Check if a move is correct .
            • Get board visual
            • Go to the best move .
            • Make moves from current position .
            • Set skill level .
            Get all kandi verified functions for this library.

            stockfish Key Features

            No Key Features are available at this moment for stockfish.

            stockfish Examples and Code Snippets

            Problems in sorting a column by value
            Pythondot img1Lines of Code : 2dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            df.astype({'Name': 'string', 'Energy, kcal': 'int32'})
            
            Errno 8 Exec Format Error - Stockfish/python chess
            Pythondot img2Lines of Code : 5dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            chmod 777 "/content/drive.../stockfish_linux"
            or
            !chmod 777 "/content/drive.../stockfish_linux"
            for google colab
            
            Python-chess: module 'chess.engine' has no attribute 'SimpleEngine'
            Pythondot img3Lines of Code : 2dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            pip install python-chess --upgrade 
            
            Infinite while loop stopping unexpectedly python threading
            Pythondot img4Lines of Code : 15dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            while board.result() == "*":
                if board.turn is not player_color:
                    result = engine.play(board, chess.engine.Limit(time=3.0))
                    board.push(result.move)
                    print(result.move)
            print(board.result())
            
            copy iconCopy
            uci
            
            position fen N7/P3pk1p/3p2p1/r4p2/8/4b2B/4P1KP/1R6 w - - 0 34
            
            d
            
            go movetime 3000
            
            Issue with python skipping code in simple chess program
            Pythondot img6Lines of Code : 6dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            def find_side():
                if int(input("Enter your team(1-black 2-white):")) == 1:
                    logic_black()
                else:
                    logic_white()
            
            AttributeError: 'str' object has no attribute 'from_square'
            Pythondot img7Lines of Code : 4dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            res = input("Enter your enemie's move: ")
            move = chess.Move.from_uci(res)
            board.push(move)
            
            How can I check if something to read in asyncio StreamReader in Windows and Python 3.7+?
            Pythondot img8Lines of Code : 25dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            async def reader(process, msg_handler, exit_handler):
                while not process.stdout.at_eof():
                    line = await process.stdout.readline()
                    msg_handler(line.decode())
                # Finished
                exit_handler()
            
            async

            Community Discussions

            QUESTION

            What is OEX (Open Exchange Protocol?) and can I call such APK from my app?
            Asked 2021-Mar-20 at 14:00

            I am not sure if I understood it correctly or not, but it seems that there is Stockfish Engines OEX, and even though it is a separately installable APK, it is a library intended to be used by other apps. The description says:

            To use these engines, you need a chess application that is compatible with the Open Exchange protocol.

            But it does not give any further details. I searched Google for OEX, but I got nothing. I searched for "Open Exchange protocol", but the only search result was something about a mail server. This seems to be the source code of the library app but it has no description either.

            So, I wonder

            1. Is this "Stockfish Engines OEX" something that a third-party applications call and get the result (like a chess move) from?
            2. If so, how can I use it? For example, how can I start a new game, input a user move and get the AI's chess move?
            ...

            ANSWER

            Answered 2021-Feb-09 at 18:10

            Do you have the latest updates for "Chess Engines OEX" and "Stockfish Engines OEX"?

            ... Recommended chess GUIs:

            • Chess for All
            • DroidFish
            • Scid on the go
            • Chess PGN Master
            • Chess for Android
            • Chess (Jeroen Carolus)
            • Acid Ape Chess

            In these apps you will find an option "Select engine". Follow the further instructions.

            Source https://stackoverflow.com/questions/65991493

            QUESTION

            Why are there different scores when chess.engine analyses a position multiple times in the same script?
            Asked 2021-Feb-17 at 22:52

            beginner programmer here, trying to make an app that detects blunders and wanting to learn more about the chess.engine library.

            I assume that using the analyse function is a discrete, self-contained process that doesn't rely on cache or memory of previous calls from the engine or anything like that.

            If this is the case, why do I get multiple different evaluations when calling analyse multiple times in a script:

            ...

            ANSWER

            Answered 2021-Feb-17 at 22:52

            Stockfish is deterministic for single-threaded analysis with node and depth limits, state and options being equal.

            The engine state is mostly the hashtable (and potentially loaded Syzygy tablebases). So your second analysis will take advantage of the hashtable of the first run. The third run will reuse hashtable results from the second run and so on.

            Usually reusing hashtable results is desirable and improves strength, but there is a way to reset the engine state, clearing the hashtable.

            In the UCI protocol this is done by sending the hint:

            Source https://stackoverflow.com/questions/65994195

            QUESTION

            Using async function to stockfish postMessage
            Asked 2021-Jan-29 at 12:13

            I tried working with stockfish.js and I have this one problem. I also used @ninjapixel/chess for easier methods than the original.

            ...

            ANSWER

            Answered 2021-Jan-29 at 12:13

            The await keyword, didn't have any effect in your code because the function stockfish.postMessage doesn't return a Promise. postMessage emits an event that will be processed in the next tick. This is why console.log('test3') was logged after console.log('test2'). After emitting the event it will return synchronously, logging console.log('test2').

            stockfish.onmessage will need to be the control centre of all events. It will need to understand the different messages, and do the appropiate actions. You dont need to put the implemention of the actions in the onmessage. You can create a function and called it from stockfish.onmessage... and then inside the action function you could call to stockfish.postMessage if you need to notify stockfis of a change... and so on.... and on...

            Source https://stackoverflow.com/questions/65953660

            QUESTION

            Java - Running a subprocess works locally but fails with "broken pipe" when ran on Heroku?
            Asked 2020-Oct-09 at 00:35

            Just as a background, I have a Java-based Discord bot deployed on Heroku using the 1 free worker dyno. I need to run a .exe file (stockfish 12 executable), pass input into it and process output from it. I'm using Java RunTime to create this Process but when I try to send input to it with the flush() method the broken pipe error is thrown. I assume Heroku must be closing the input / output stream somehow because this code runs fine locally. Does Heroku have a limit on creating sub processes?

            app[worker.1]: chess.player.ai.stockfish.exception.StockfishEngineException: java.io.IOException: Broken pipe app[worker.1]: at chess.player.ai.stockfish.engine.UCIEngine.sendCommand(UCIEngine.java:39) app[worker.1]: at chess.player.ai.stockfish.engine.UCIEngine.passOption(UCIEngine.java:77) app[worker.1]: at chess.player.ai.stockfish.engine.UCIEngine.(UCIEngine.java:23) app[worker.1]: at chess.player.ai.stockfish.engine.Stockfish.(Stockfish.java:13) app[worker.1]: at chess.player.ai.stockfish.StockFishClient.(StockFishClient.java:21) app[worker.1]: at chess.player.ai.stockfish.StockFishClient$Builder.build(StockFishClient.java:80)

            EDIT: I tried to simplify the program by hard coding a single command and it still fails to get past the writer.flush() line. Nothing is printed.

            ...

            ANSWER

            Answered 2020-Oct-08 at 02:25

            output stream closes itself. When you run a command, create a new process or this command must block a stream and await an input.

            Recommend ProcessBuilder, it is more easily to configure:

            Source https://stackoverflow.com/questions/64254566

            QUESTION

            Stockfish 12 source code: Templates replacing function parameters
            Asked 2020-Oct-04 at 11:58

            Since Stockfish is the highest rated chess engine, and it's known to be quite CPU-effiecient I decided to open its source code and try to understand and see how it works.

            I came across this snippet of code, simply shifts a bitboard to a certain direction (north, south, east...)

            TAKEN FROM STOCKFISH 12 SOURCE: Download

            ...

            ANSWER

            Answered 2020-Oct-04 at 11:58

            What is the need to have a template in this context, and why would something like

            Source https://stackoverflow.com/questions/64193811

            QUESTION

            Infinite while loop stopping unexpectedly python threading
            Asked 2020-Sep-25 at 14:37

            I hope you're having a good day :)

            Recently I have been making a chess program.

            I'm now at the point of making the AI and I'm using Stockfish for testing purposes.

            Since I need the computer to have time to evaluate without pausing the pygame game loop, I'm using the threading library.

            I'm also using python-chess as my main library for handling the game state and making moves, as well as accessing Stockfish.

            Here is my code for threading:

            ...

            ANSWER

            Answered 2020-Sep-25 at 14:37

            I'm not entirely sure why the loop stops, but I did figure out a way to fix my problem. Instead of:

            Source https://stackoverflow.com/questions/64056499

            QUESTION

            How to use a variable which is inside a (def) function?
            Asked 2020-Sep-19 at 11:50

            I'm sorry that I'm still a beginner :) And I'm stuck at some point, I hope you could help me.

            ...

            ANSWER

            Answered 2020-Sep-19 at 11:50

            You should return the array from the function to access it outside the function. In your specific case, it would be:

            Source https://stackoverflow.com/questions/63968086

            QUESTION

            Python Chess: How to stop chess.engine.SimpleEngine.popen_uci() from opening the shell
            Asked 2020-Aug-22 at 16:44

            I'm making my own chess GUI and am using python chess and stockfish for it. After freezing it into an executable, every time I call chess.engine.SimpleEngine.popen_uci('location\\of\\stockfish'), it opens the shell for stockfish and if I close the shell, stockfish stops working. What do I do so that the shell is only running in the background and is not visible to the user?

            ...

            ANSWER

            Answered 2020-Aug-15 at 09:52

            This is a platform-specific question and I am guessing from 'location\\of\\stockfish' that Windows is the platform you are interested in.

            popen_uci accepts a ** (extra keywords) parameter and you can use that to pass parameters through to subprocess.Popen(). Use the passthrough parameter startupinfo to provide an instance of subprocess.STARTUPINFO. That in turn can set the win32 flag wShowWindow to do what you want.

            Source https://stackoverflow.com/questions/63424594

            QUESTION

            Using popen to read and write in C using two executables
            Asked 2020-Jun-27 at 23:50

            I understand that popen doesn't allow simultaneous read and write.

            To get around this, I created two files, 1.c for writing, and 2.c for reading. The files are included below.

            When I run 1.out, I get the expected output on stdout:

            ...

            ANSWER

            Answered 2020-Jun-27 at 23:50
              while (fgets(path, sizeof(path), stdout) != NULL) {
            

            Source https://stackoverflow.com/questions/62615429

            QUESTION

            Need help understanding the uci.h file used in Stockfish
            Asked 2020-Apr-19 at 23:12

            I'm trying to understand how Stockfish handles the UCI protocol so I can adapt my engine to use UCI as well.

            However I am still a beginner with C++ and the uci.h file uses some coding practices that I have never seen before.

            Specifically I don't understand the operator() function. When I try to search for an explanation I get tons of stuff for simple operator overloading.

            What does this segment of the code do?

            ...

            ANSWER

            Answered 2020-Apr-19 at 23:12

            What does this segment of the code do?

            Source https://stackoverflow.com/questions/61312734

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install stockfish

            You can install using 'pip install stockfish' or download it from GitHub, PyPI.
            You can use stockfish like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

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            Install
          • PyPI

            pip install stockfish

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          • HTTPS

            https://github.com/zhelyabuzhsky/stockfish.git

          • CLI

            gh repo clone zhelyabuzhsky/stockfish

          • sshUrl

            git@github.com:zhelyabuzhsky/stockfish.git

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