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'''[[Main Page|Home]] * [[Organizations]] * SSDF'''<br/>

[[FILE:Ssdf.gif|border|right|thumb|link=http://ssdf.bosjo.net/ssdf.htm| SSDF Logo <ref>[http://ssdf.bosjo.net/ssdf.htm Svenska schackdatorföreningen (SSDF)]</ref> ]]

The '''SSDF''' - '''S'''venska '''s'''chack'''d'''ator'''f'''öreningen, the Swedish Chess Computer Association, is an organization that tests computer chess software by playing chess programs against one another and producing a rating list. The forerunner of the SSDF was founded in [[Timeline#1979|1979]] by [[Johan Enroth]] in conjunction with the publication of the [[PLY (Magazine)|PLY Magazine]] <ref>[https://web.archive.org/web/20180713223218/http://privat.bahnhof.se/wb432434/historik.htm PLY/SSDF – the story]([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine], July 2018)</ref>. Enroth served as first president and was also Vice-President of the [[ICCA]] in the 80s. Initiated by [[Göran Grottling]] <ref>[http://privat.bahnhof.se/wb432434/historik.htm#1997 PLY/SSDF – the story - 1997]</ref>, the SSDF was founded with the purpose to coordinate the interest for computerchess and chesscomputers in Sweden, and to release PLY. [[Thoralf Karlsson]] became chairman until 2013 when he was superseded by [[Lars Sandin]]. In 1998, the PLY Magazine was ceased.

 * [[Tony Hedlund]] <ref>[http://privat.bahnhof.se/wb432434/welcome.htm Tony's Chess site]</ref> administrates a administrated the database of test games. Games can be downloaded in [[ChessBase (Database)|ChessBase]] and [[Portable Game Notation|PGN]] format.

In the beginning a lot of calibrations were done to match human ratings <ref>[https://web.archive.org/web/20180713223218/http://privat.bahnhof.se/wb432434/historik.htm PLY/SSDF – the story]([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine], July 2018)</ref> :

* [http://home.scarlet.be/vincentlejeune/SSDF/ Lists and comments from 1996 to 2000] by [[Vincent Lejeune]]==1984 1994 ...== * 30 lists from 1996 to 2000 [httphttps://homegroups.google.com/d/msg/rec.scarletgames.bechess/vincentlejeuneCebfSwOrvYo/nY9uE9HzCRAJ SSDFComputer Rating List 4/ here94] and by [[Mads Brevik]], [[Computer Chess Forums|rgc]], June 08, 1994* [httphttps://wwwgroups.oocitiesgoogle.orgcom/marochessd/ssdfmsg/ssdfrec.games.htm here (with ad)chess/NuFo6p4CdTY/LPUJwgSmzRoJ SSDF COMPUTER RATING LIST 7/94] by [[Mads Brevik]], [[Computer Chess Forums|rgc]], October 31, 1994

* [httphttps://groups.google.com/groupd/msg/rec.games.chess.computer/browse_frm/threadloYC28ZCB4M/968602dbc6420783 O8_L2c1eFJkJ The Swedish Ratinglist 1/96 (1/2)] by [[Göran Grottling]], [[Computer Chess Forums|rgcc]], January 07, 1996* [httphttps://groups.google.com/groupd/msg/rec.games.chess.computer/browse_frmXa9iZMniCT0/K_Gk_v7XD14J The Swedish Ratinglist 1/96 (2/2)] by [[Göran Grottling]], [[Computer Chess Forums|rgcc]], January 07, 1996* [https://groups.google.com/d/msg/rec.games.chess.computer/threadHxI6byKNUGY/1f123a6f228d5066 5CYJb6LbIyUJ The Swedish Ratinglist - Long version!] by [[Göran Grottling]], [[Computer Chess Forums|rgcc]], January 07, 1996

* [httphttps://www.chessbasestmintz.com/newsdetailccc/index.aspphp?newsidid=25 191496 SSDF Rating List 2001-10-02] by [[Thoralf Karlsson]], [[ChessBaseCCC]], October 0102, 2001

* [httphttps://enwww.chessbasestmintz.com/postccc/fritz-comes-second-just-behind-deep-fritz index.php?id=277635 SSDF Rating List 2003-01-16] by [[Thoralf Karlsson]], [[ChessBaseCCC]], January 1716, 2003* [httphttps://www.chessbasestmintz.com/newsdetailccc/index.aspphp?newsidid=796 284162 SSDF Rating List 2003-02-13] by [[Thoralf Karlsson]], [[ChessBaseCCC]], February 1314, 2003* [https://www.stmintz.com/ccc/index.php?id=351280 SSDF Rating List 2004-02-25] by [[Thoralf Karlsson]], [[chessprogramming/CCC|CCC]], February 25, 2004* [https://www.stmintz.com/ccc/index.php?id=403425 SSDF Rating List 2004-12-31] by [[Thoralf Karlsson]], [[chessprogramming/CCC|CCC]], December 31, 2004

* [https://www.stmintz.com/ccc/index.php?id=414360 SSDF Rating List 2005-02-25] by [[Thoralf Karlsson]], [[chessprogramming/CCC|CCC]], February 26, 2005

* <span class="wiki_link_ext">[http://www.anacadigital.com/ssdfratinglist.html SSDF Rating List 2006-11-24]</span>archived by [http://www.anacadigital.com/ssdfratinglistanacadigital.html 2006-11-24com] Archives

=Forum Posts= * [https://groups.google.com/d/msg/rec.games.chess.computer/k07HlW__jxo/FlJTp9kN_KcJ The SSDF FAQ] by [[Göran Grottling]], [[Computer Chess Forums|rgcc]], July 23, 1995

* [https://web.archive.org/web/20180713223218/http://privat.bahnhof.se/wb432434/historik.htm PLY/SSDF – the story]([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine], July 2018)