Metadata-Version: 2.1
Name: pyffish
Version: 0.0.17
Summary: Fairy-Stockfish Python wrapper
Home-page: https://github.com/gbtami/Fairy-Stockfish
Author: Bajusz Tamás
Author-email: gbtami@gmail.com
License: GPL3
Description: ## Fairy-Stockfish
        
        [![Build Status](https://travis-ci.org/ianfab/Fairy-Stockfish.svg?branch=master)](https://travis-ci.org/ianfab/Fairy-Stockfish)
        [![Build Status](https://ci.appveyor.com/api/projects/status/github/ianfab/Fairy-Stockfish?branch=master&svg=true)](https://ci.appveyor.com/project/ianfab/Fairy-Stockfish/branch/master)
        [![PyPI version](https://badge.fury.io/py/pyffish.svg)](https://badge.fury.io/py/pyffish)
        
        Fairy-Stockfish is a Stockfish fork designed for the support of (fairy) chess variants and to make the addition/configuration of new variants as simple and flexible as possible. The goal of the project is to create an engine supporting a large variety of chess-like games, equipped with the powerful search of Stockfish. It is complementary to Stockfish forks more specialized for certain chess variants, such as [multi-variant Stockfish](https://github.com/ddugovic/Stockfish), [Seirawan-Stockfish](https://github.com/ianfab/Seirawan-Stockfish), [Makruk-Stockfish](https://github.com/ianfab/Makruk-Stockfish), etc., supporting more variants with the tradeoff of slightly lower performance.
        
        Besides chess, the currently supported games are:
        
        **Regional and historical games**
        - [Shatranj](https://en.wikipedia.org/wiki/Shatranj), [Courier](https://en.wikipedia.org/wiki/Courier_chess)
        - [Makruk](https://en.wikipedia.org/wiki/Makruk), [ASEAN](http://hgm.nubati.net/rules/ASEAN.html), Ai-Wok
        - [Sittuyin](https://en.wikipedia.org/wiki/Sittuyin)
        - [Shatar](https://en.wikipedia.org/wiki/Shatar), [Jeson Mor](https://en.wikipedia.org/wiki/Jeson_Mor)
        - [Shogi](https://en.wikipedia.org/wiki/Shogi)
        
        **Chess variants**
        - [Capablanca](https://en.wikipedia.org/wiki/Capablanca_Chess), [Janus](https://en.wikipedia.org/wiki/Janus_Chess), [Modern](https://en.wikipedia.org/wiki/Modern_Chess_(chess_variant)), [Chancellor](https://en.wikipedia.org/wiki/Chancellor_Chess), [Embassy](https://en.wikipedia.org/wiki/Embassy_Chess), [Gothic](https://www.chessvariants.com/large.dir/gothicchess.html), [Capablanca random chess](https://en.wikipedia.org/wiki/Capablanca_Random_Chess)
        - [Grand](https://en.wikipedia.org/wiki/Grand_Chess), [Shako](https://www.chessvariants.com/large.dir/shako.html)
        - [Chess960](https://en.wikipedia.org/wiki/Chess960), [Placement/Pre-Chess](https://www.chessvariants.com/link/placement-chess)
        - [Crazyhouse](https://en.wikipedia.org/wiki/Crazyhouse), [Loop](https://en.wikipedia.org/wiki/Crazyhouse#Variations), [Chessgi](https://en.wikipedia.org/wiki/Crazyhouse#Variations), [Pocket Knight](http://www.chessvariants.com/other.dir/pocket.html)
        - [Seirawan](https://en.wikipedia.org/wiki/Seirawan_chess)
        - [Amazon](https://en.wikipedia.org/wiki/Amazon_(chess)), [Chigorin](https://en.wikipedia.org/wiki/Chigorin_Chess), [Almost chess](https://en.wikipedia.org/wiki/Almost_Chess), [Hoppel-Poppel](http://www.chessvariants.com/diffmove.dir/hoppel-poppel.html)
        - [Antichess](https://lichess.org/variant/antichess), [Giveaway](http://www.chessvariants.com/diffobjective.dir/giveaway.old.html), [Losers](https://www.chessclub.com/help/Wild17), [Codrus](http://www.binnewirtz.com/Schlagschach1.htm)
        - [Extinction](https://en.wikipedia.org/wiki/Extinction_chess), [Kinglet](https://en.wikipedia.org/wiki/V._R._Parton#Kinglet_Chess)
        - [King of the Hill](https://en.wikipedia.org/wiki/King_of_the_Hill_(chess)), [Racing Kings](https://en.wikipedia.org/wiki/V._R._Parton#Racing_Kings)
        - [Three-check](https://en.wikipedia.org/wiki/Three-check_chess), Five-check
        - [Los Alamos](https://en.wikipedia.org/wiki/Los_Alamos_chess)
        - [Horde](https://en.wikipedia.org/wiki/Dunsany%27s_Chess#Horde_Chess)
        
        **Shogi variants**
        - [Minishogi](https://en.wikipedia.org/wiki/Minishogi), [EuroShogi](https://en.wikipedia.org/wiki/EuroShogi), [Judkins shogi](https://en.wikipedia.org/wiki/Judkins_shogi)
        - [Kyoto shogi](https://en.wikipedia.org/wiki/Kyoto_shogi), [Microshogi](https://en.wikipedia.org/wiki/Micro_shogi)
        - [Dobutsu shogi](https://en.wikipedia.org/wiki/Dōbutsu_shōgi), [Goro goro shogi](https://en.wikipedia.org/wiki/D%C5%8Dbutsu_sh%C5%8Dgi#Variation)
        
        **Related games**
        - [Breakthrough](https://en.wikipedia.org/wiki/Breakthrough_(board_game))
        - [Clobber](https://en.wikipedia.org/wiki/Clobber)
        - [Connect4](https://en.wikipedia.org/wiki/Connect_Four), [Tic-Tac-Toe](https://en.wikipedia.org/wiki/Tic-tac-toe)
        
        See the [Fairy-Stockfish Wiki](https://github.com/ianfab/Fairy-Stockfish/wiki) for more info.
        
        ## Stockfish
        ### Overview
        
        [![Build Status](https://travis-ci.org/official-stockfish/Stockfish.svg?branch=master)](https://travis-ci.org/official-stockfish/Stockfish)
        [![Build Status](https://ci.appveyor.com/api/projects/status/github/official-stockfish/Stockfish?branch=master&svg=true)](https://ci.appveyor.com/project/mcostalba/stockfish/branch/master)
        
        [Stockfish](https://stockfishchess.org) is a free, powerful UCI chess engine
        derived from Glaurung 2.1. It is not a complete chess program and requires a
        UCI-compatible GUI (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena,
        Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably.
        Read the documentation for your GUI of choice for information about how to use
        Stockfish with it.
        
        
        ## Files
        
        This distribution of Stockfish consists of the following files:
        
          * Readme.md, the file you are currently reading.
        
          * Copying.txt, a text file containing the GNU General Public License version 3.
        
          * src, a subdirectory containing the full source code, including a Makefile
            that can be used to compile Stockfish on Unix-like systems.
        
        
        ## UCI parameters
        
        Currently, Stockfish has the following UCI options:
        
          * #### Debug Log File
            Write all communication to and from the engine into a text file.
        
          * #### Contempt
            A positive value for contempt favors middle game positions and avoids draws.
        
          * #### Analysis Contempt
            By default, contempt is set to prefer the side to move. Set this option to "White"
            or "Black" to analyse with contempt for that side, or "Off" to disable contempt.
        
          * #### Threads
            The number of CPU threads used for searching a position. For best performance, set
            this equal to the number of CPU cores available.
        
          * #### Hash
            The size of the hash table in MB.
        
          * #### Clear Hash
            Clear the hash table.
        
          * #### Ponder
            Let Stockfish ponder its next move while the opponent is thinking.
        
          * #### MultiPV
            Output the N best lines (principal variations, PVs) when searching.
            Leave at 1 for best performance.
        
          * #### Skill Level
            Lower the Skill Level in order to make Stockfish play weaker (see also UCI_LimitStrength).
            Internally, MultiPV is enabled, and with a certain probability depending on the Skill Level a
            weaker move will be played.
        
          * #### UCI_LimitStrength
            Enable weaker play aiming for an Elo rating as set by UCI_Elo. This option overrides Skill Level.
        
          * #### UCI_Elo
            If enabled by UCI_LimitStrength, aim for an engine strength of the given Elo.
            This Elo rating has been calibrated at a time control of 60s+0.6s and anchored to CCRL 40/4.
        
          * #### Move Overhead
            Assume a time delay of x ms due to network and GUI overheads. This is useful to
            avoid losses on time in those cases.
        
          * #### Minimum Thinking Time
            Search for at least x ms per move.
        
          * #### Slow Mover
            Lower values will make Stockfish take less time in games, higher values will
            make it think longer.
        
          * #### nodestime
            Tells the engine to use nodes searched instead of wall time to account for
            elapsed time. Useful for engine testing.
        
          * #### UCI_Chess960
            An option handled by your GUI. If true, Stockfish will play Chess960.
        
          * #### UCI_AnalyseMode
            An option handled by your GUI.
        
          * #### SyzygyPath
            Path to the folders/directories storing the Syzygy tablebase files. Multiple
            directories are to be separated by ";" on Windows and by ":" on Unix-based
            operating systems. Do not use spaces around the ";" or ":".
        
            Example: `C:\tablebases\wdl345;C:\tablebases\wdl6;D:\tablebases\dtz345;D:\tablebases\dtz6`
        
            It is recommended to store .rtbw files on an SSD. There is no loss in storing
            the .rtbz files on a regular HD. It is recommended to verify all md5 checksums
            of the downloaded tablebase files (`md5sum -c checksum.md5`) as corruption will
            lead to engine crashes.
        
          * #### SyzygyProbeDepth
            Minimum remaining search depth for which a position is probed. Set this option
            to a higher value to probe less agressively if you experience too much slowdown
            (in terms of nps) due to TB probing.
        
          * #### Syzygy50MoveRule
            Disable to let fifty-move rule draws detected by Syzygy tablebase probes count
            as wins or losses. This is useful for ICCF correspondence games.
        
          * #### SyzygyProbeLimit
            Limit Syzygy tablebase probing to positions with at most this many pieces left
            (including kings and pawns).
        
        
        ## What to expect from Syzygybases?
        
        If the engine is searching a position that is not in the tablebases (e.g.
        a position with 8 pieces), it will access the tablebases during the search.
        If the engine reports a very large score (typically 153.xx), this means
        that it has found a winning line into a tablebase position.
        
        If the engine is given a position to search that is in the tablebases, it
        will use the tablebases at the beginning of the search to preselect all
        good moves, i.e. all moves that preserve the win or preserve the draw while
        taking into account the 50-move rule.
        It will then perform a search only on those moves. **The engine will not move
        immediately**, unless there is only a single good move. **The engine likely
        will not report a mate score even if the position is known to be won.**
        
        It is therefore clear that this behaviour is not identical to what one might
        be used to with Nalimov tablebases. There are technical reasons for this
        difference, the main technical reason being that Nalimov tablebases use the
        DTM metric (distance-to-mate), while Syzygybases use a variation of the
        DTZ metric (distance-to-zero, zero meaning any move that resets the 50-move
        counter). This special metric is one of the reasons that Syzygybases are
        more compact than Nalimov tablebases, while still storing all information
        needed for optimal play and in addition being able to take into account
        the 50-move rule.
        
        
        ## Compiling Stockfish yourself from the sources
        
        On Unix-like systems, it should be possible to compile Stockfish
        directly from the source code with the included Makefile.
        
        Stockfish has support for 32 or 64-bit CPUs, the hardware POPCNT
        instruction, big-endian machines such as Power PC, and other platforms.
        
        In general it is recommended to run `make help` to see a list of make
        targets with corresponding descriptions. When not using the Makefile to
        compile (for instance with Microsoft MSVC) you need to manually
        set/unset some switches in the compiler command line; see file *types.h*
        for a quick reference.
        
        
        ## Understanding the code base and participating in the project
        
        Stockfish's improvement over the last couple of years has been a great
        community effort. There are a few ways to help contribute to its growth.
        
        ### Donating hardware
        
        Improving Stockfish requires a massive amount of testing. You can donate
        your hardware resources by installing the [Fishtest Worker](https://github.com/glinscott/fishtest/wiki/Running-the-worker)
        and view the current tests on [Fishtest](http://tests.stockfishchess.org/tests).
        
        ### Improving the code
        
        If you want to help improve the code, there are several valuable ressources:
        
        * [In this wiki,](https://www.chessprogramming.org) many techniques used in
        Stockfish are explained with a lot of background information.
        
        * [The section on Stockfish](https://www.chessprogramming.org/Stockfish)
        describes many features and techniques used by Stockfish. However, it is
        generic rather than being focused on Stockfish's precise implementation.
        Nevertheless, a helpful resource.
        
        * The latest source can always be found on [GitHub](https://github.com/official-stockfish/Stockfish).
        Discussions about Stockfish take place in the [FishCooking](https://groups.google.com/forum/#!forum/fishcooking)
        group and engine testing is done on [Fishtest](http://tests.stockfishchess.org/tests).
        If you want to help improve Stockfish, please read this [guideline](https://github.com/glinscott/fishtest/wiki/Creating-my-first-test)
        first, where the basics of Stockfish development are explained.
        
        
        ## Terms of use
        
        Stockfish is free, and distributed under the **GNU General Public License version 3**
        (GPL v3). Essentially, this means that you are free to do almost exactly
        what you want with the program, including distributing it among your
        friends, making it available for download from your web site, selling
        it (either by itself or as part of some bigger software package), or
        using it as the starting point for a software project of your own.
        
        The only real limitation is that whenever you distribute Stockfish in
        some way, you must always include the full source code, or a pointer
        to where the source code can be found. If you make any changes to the
        source code, these changes must also be made available under the GPL.
        
        For full details, read the copy of the GPL v3 found in the file named
        *Copying.txt*.
Platform: UNKNOWN
Classifier: Development Status :: 3 - Alpha
Classifier: License :: OSI Approved :: GNU General Public License v3 (GPLv3)
Classifier: Programming Language :: Python :: 3
Classifier: Operating System :: OS Independent
Description-Content-Type: text/markdown
