This is a beginning of my new crusade for 2016 a wiki open source for open chess engine,where programer can have link direction to get to Them
First place Stockfish chess engine
https://github.com/official-stockfish/Stockfish
UCI chess engine http://www.stockfishchess.com/
First place Stockfish chess engine
https://github.com/official-stockfish/Stockfish
UCI chess engine http://www.stockfishchess.com/
Overview
Stockfish is a free UCI chess engine derived from Glaurung 2.1. It is not a complete chess program and requires some UCI-compatible GUI (e.g. XBoard with PolyGlot, 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.
This version of Stockfish supports up to 128 cores. The engine defaults to one search thread, so it is therefore recommended to inspect the value of the Threads UCI parameter, and to make sure it equals the number of CPU cores on your computer.
This version of Stockfish has support for Syzygybases.
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.
- src, a subdirectory containing the full source code, including a Makefile that can be used to compile Stockfish on Unix-like systems.
Syzygybases
Configuration
Syzygybases are configured using the UCI options "SyzygyPath", "SyzygyProbeDepth", "Syzygy50MoveRule" and "SyzygyProbeLimit".
The option "SyzygyPath" should be set to the directory or directories that contain the .rtbw and .rtbz files. Multiple directories should 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.
Increasing the "SyzygyProbeDepth" option lets the engine probe less aggressively. Set this option to a higher value if you experience too much slowdown (in terms of nps) due to TB probing.
Set the "Syzygy50MoveRule" option to false if you want tablebase positions that are drawn by the 50-move rule to count as win or loss. This may be useful for correspondence games (because of tablebase adjudication).
The "SyzygyProbeLimit" option should normally be left at its default value.
What to expect If the engine is searching a position that is not in the tablebases (e.g. a position with 7 pieces), it will access the tablebases during the search. If the engine reports a very large score (typically 123.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 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 it yourself
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.Terms of use
Stockfish is free, and distributed under the GNU General Public License (GPL). 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 found in the file named Copying.txt
Second reference
Chess programming wiki
https://chessprogramming.wikispaces.com/Open+Source+EnginesSmall and Easy
Just getting started? These engines are quite small, making them easy to understand.
- FCP by Ian Osgood - a derivation of TSCP written in the Forth programming language
- Micro-Max by Harm Geert Muller - just 100 lines of code with 34+ web pages of explanation!
- p4wn by Douglas Bagnall - A smallish public domain chess engine.
- pChess [1] by John Roland Penner - Original pedagogical engine written in FutureBasic with source code for Mac OSX
- Pulse by Phokham Nonava - a didactic engine written in Java
- SCP - Stanback Chess Program - base of GNU Chess 2-4
- Sunfish by Thomas Dybdahl Ahle - a didactic engine written in Python
- TSCP - Tom Kerrigan's Simple Chess Program » TSCP - Tom Kerrigan's Home Page
Middle tier
These are engines which are not necessarily strong, but they show implementation details of things like null move or transposition table :
- CPW-Engine by Pawel Koziol and Edmund Moshammer
- Faile by Adrien Regimbald (very clean search code)
- Gerbil by Bruce Moreland
- NG-play by George Georgopoulos - A small, open source engine (small memory usage), written in C
- Vice - the Video Instructional Chess Engine by BlueFeverSoft, written in C
More advanced
More advanced? There are many stronger engines available which include the source. These include:
- ChessV by Gregory Strong - plays over 50 chess variants as well as Orthodox Chess [2]
- Crafty by Robert Hyatt
- Daydreamer by Aaron Becker
- Fruit by Fabien Letouzey
- Glaurung by Tord Romstad [3]
- GNU Chess
- Scorpio by Daniel Shawul
- Senpai by Fabien Letouzey
- Stockfish by Tord Romstad, Marco Costalba, and Joona Kiiski
Dynamic portion
To expand this list, create a new engine page with the tag "opensourceengines".
- Abulafia
- AdaChess
- Alfil
- AliBaba
- Alice
- Amundsen
- Amy
- APIL chess
- Arasan
- Barbarossa
- BBChess (SI)
- Belzebub
- Beowulf
- Betsabe
- Bills Bare Bones Chess
- Bismark
- Bison
- Bitfoot
- Bobcat
- Booot
- Brainless
- Brainless (Forth)
- Brutus NL
- Buzz
- Calculon
- Carballo
- Cassandre
- Chenard
- Cheng
- Cheops (Miller)
- Chesley
- Chess 0.5
- Chess At Nite
- ChessBin.com
- Chessterfield
- Chest
- Cinnamon
- Clubfoot
- Cluster Toga
- CMU Chess Program
- Conqueror
- CPW-Engine
- Crafty
- Critter
- CuckooChess
- Cupcake
- Cyclone
- DanaSah
- DayDreamer
- Deep Pink
- Delfi
- Diablo
- DiscoCheck
- Dolphin
- DON
- Donna
- Dreamer
- DroidFish
- Exacto
- EXchess
- Faile
- FCP
- Firenzina
- Firstchess
- Floyd
- Flux
- Freyr
- Fridolin
- Fruit
- Fruit Reloaded
- FUSCsharp
- Gambit Fruit
- GambitVB
- Garbochess
- Garbochess-JS
- Gerbil
- Gibbon
- Giraffe
- GiuChess
- Gk
- Glaurung
- GNU Chess
- Godot
- Greko
- GullChess
- Gullydeckel
- Gupta
- Hakkapeliitta
- HeavyChess
- Igorrit
- Ippolit
- Ivanhoe
- Jabba
- Jazz
- Jester US
- Joanna
- KC Chess
- Kiwi
- KnightCap
- Kurt
- LarsenVB
- Lime
- Little Rook Chess
- Lozza
- LTChess
- MadChess
- Madlenka
- Matilde
- Maverick
- Micro-Max
- Minimax (program)
- MinkoChess
- MLChess
- MSCP
- Murka
- Myopic
- Napoleon
- Natwarlal
- Nemeton
- NG-play
- NoraGrace
- Numpty chess
- Obender
- Octochess
- OliThink
- p4wn
- Parrot
- Pawny
- Pepito
- Phalanx
- Phoenix (Rahul)
- PolarChess
- Popeye
- Portfish
- Porucznik
- ProChess IT
- Prophet
- Protector
- PsycoChess
- Pulse
- Purple Haze
- PyChess
- QuTeChess
- RattateChess
- RDChess
- RedQueen
- Rival
- Robbolito
- Rocinante
- Rodent
- RomiChess
- RumbleMinze
- SAL
- Sayuri
- Scidlet
- Scorpio
- SCP
- Senpai
- Sharp Chess
- SharpChess
- Shatranj (toolkit)
- Simon
- Sjaak (Glebbeek)
- Sjeng
- Slow Chess
- Small Potato
- Smash
- Spector
- Stockfish
- Strelka
- Sunfish
- Sungorus
- Superpawn
- Supra
- Texel
- The Turk (TR)
- Thor's Hammer
- Toga
- Toledo
- TSCP
- Tucano
- Turbo Chess
- Typhoon
- Vajolet
- Vanilla Chess
- Vice
- Viper
- Wing
- Winglet
- Woodpecker
- Xadreco
- Xpdnt
- ZCT
- Zeta Dva
- Ziggy IS
- Zochova
- Zurichess
- Zzzzzz
See also
- Fabio Cavicchio on Open Source
- Rémi Coulom on Open Source
- Alexander Naumov on Open Source
- Free Software Foundation
Publications
- Krzysztof Siewicz (2005). Legal issues of Open Source Software. Background of the Research Proposal, pdf
- Krzysztof Siewicz (2010). Towards an improved regulatory framework of free software : protecting user freedoms in a world of software communities and eGovernments. Doctoral thesis, Leiden University, Promoters: Jaap van den Herik, A.H.J. Schmidt
- Jaap van den Herik, Krzysztof Siewicz (2011). Open Source has a Price. ICGA Journal, Vol. 34, No. 2
Forum Posts
- which programs have opened their source? by Alejandro Dubrovsky, Winboard Forum, June 13, 2002
- Dilemma with completely free sources at certain level by Günther Simon, Winboard Forum, January 29, 2005
- Most Basic Open Source Chess Engine For Beginner Engine Devs by netiad, Winboard Forum, September 18, 2010
- Licensing by Shawn Chidester, CCC, April 03, 2015
External Links
- Copyright from Wikipedia
- Copyright infringement from Wikipedia
- Free software from Wikipedia
- Free software movemen from Wikipedia
- GNU General Public License from Wikipedia (GPL)
- GNU Lesser General Public License from Wikipedia
- Intellectual property from Wikipedia
- MIT License from Wikipedia
- Open source from Wikipedia
- Open source software from Wikipedia
- Shareware from Wikipedia
- Hans Koller Free Sound - Freddy, Berliner Jazztage, Philharmonie, Berlin, November 01, 1974, YouTube Video
Hans Koller, Zbigniew Seifert, Wolfgang Dauner, Adelhard Roidinger, Janusz Stefanski
References
- ^ Storm's Nest - Creative Work
- ^ ChessV from Wikipedia
- ^ Glaurung 0.1.5 source code by Tord Romstad, Winboard Forum, November 30, 2004