25,161
edits
Changes
Created page with "'''Home * Engines * Chess 0.5X''' '''Chess 0.5X''',<br/> a chess program by Wim Elsenaar written in the early 80s at the [https://en.wikipedia.org/wiki/..."
'''[[Main Page|Home]] * [[Engines]] * Chess 0.5X'''
'''Chess 0.5X''',<br/>
a chess program by [[Wim Elsenaar]] written in the early 80s at the [https://en.wikipedia.org/wiki/Vrije_Universiteit Vrije Universiteit Amsterdam] to run on a [[PDP-11]]. Chess 0.5X was an PDP-11 [[Assembly|assembly]] port of [[Larry Atkin|Larry Atkin's]] and [[Peter W. Frey|Peter W. Frey's]] didactic [[Pascal]] program [[Chess 0.5]], as published 1978 in [[Byte Magazine]] including source code listing. Despite many changes and further development, which in fact seemed to qualify for a new entry, the program's name was chosen in dependence to its initial origin, using a [[Chess (Program)|Chess 4.0]] like structure of a [[Type A Strategy|Shannon Type A]] program with [[Alpha-Beta|alpha-beta]] and [[Quiescence Search|quiescence search]] <ref> [[Wim Elsenaar]] ('''1983'''). ''Chess 0.5X'' in [[Peter van Diepen]] (ed.) ('''1983'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1982''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-1983,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201982.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1982]]</ref>.
=Tournament Play=
Chess 0.5X competed at several early [[Dutch Open Computer Chess Championship|Dutch Open Computer Chess Championships]]. Already with a strong debut at the [[DOCCC 1982]], it won the [[DOCCC 1983]] and the [[DOCCC 1984]] both with a perfect 100% score. At the [[International Computer Chess Tournament 1984]] in [https://en.wikipedia.org/wiki/Baarn Baarn], Chess 0.5X narrowly missed the tournament win, losing the final round from [[PK|PK83]] which had zero points so far. Winner [[Merlin]] was initially based on Chess 0.5 as well <ref>[[Werner DePauli-Schimanovich-Göttig|Werner DePauli-Schimanovich]] ('''2006'''). ''[http://www.trauner.at/buchdetail.aspx?artnr=20199541 Europolis 6]''. Informatik für Spiele und Verkehr. Extension der Mengenlehre, Herausgeber: Franz Pichler, [http://www.trauner.at/Default.aspx Universitätsverlag Rudolf Trauner], ISBN 978-3-85487-946-6, (SG7) Merlin (ein ComputerChess-Programm) s. 171 (German), [http://books.google.com/books?id=Gf4WibmHVbcC&pg=PA175&lpg=PA175&source=bl&ots=YPtaHAp3Z4&sig=DNRPh11heo8Q1zS3UOBe0qoCF-8&hl=en&ei=0GmnTMX1GMfJswaL-NivDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBgQ6AEwAA#v=onepage&q&f=false Google Books]</ref> <ref>[[Helmut Horacek]], [[Marcus Wagner]] ('''1981'''). ''Das Schachprogramm Merlin, Verbesserung von Laufzeit-Effizient, Eröffnungsbibliothek und Bewertungsfunktion.'' 4. Tagung "Berichte aus Informatik-Instituten" (German)</ref>.
=See also=
* [[Chess 0.5]]
* [[Chess (Program)|Chess 4.0]]
=Publications=
* [[Wim Elsenaar]] ('''1983'''). ''Chess 0.5X'' in [[Peter van Diepen]] (ed.) ('''1983'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1982''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-1983,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201982.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1982]]
* [[Wim Elsenaar]] ('''1984'''). ''Chess 0.5X'' in [[Roger Hünen]], [[Sicco Kooi]] (eds.) ('''1984'''). ''CSVN computerschaak toernooi Leiden 1983''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/08-1984,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201983.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1983]]
=References=
<references />
'''[[Engines|Up one Level]]'''
'''Chess 0.5X''',<br/>
a chess program by [[Wim Elsenaar]] written in the early 80s at the [https://en.wikipedia.org/wiki/Vrije_Universiteit Vrije Universiteit Amsterdam] to run on a [[PDP-11]]. Chess 0.5X was an PDP-11 [[Assembly|assembly]] port of [[Larry Atkin|Larry Atkin's]] and [[Peter W. Frey|Peter W. Frey's]] didactic [[Pascal]] program [[Chess 0.5]], as published 1978 in [[Byte Magazine]] including source code listing. Despite many changes and further development, which in fact seemed to qualify for a new entry, the program's name was chosen in dependence to its initial origin, using a [[Chess (Program)|Chess 4.0]] like structure of a [[Type A Strategy|Shannon Type A]] program with [[Alpha-Beta|alpha-beta]] and [[Quiescence Search|quiescence search]] <ref> [[Wim Elsenaar]] ('''1983'''). ''Chess 0.5X'' in [[Peter van Diepen]] (ed.) ('''1983'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1982''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-1983,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201982.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1982]]</ref>.
=Tournament Play=
Chess 0.5X competed at several early [[Dutch Open Computer Chess Championship|Dutch Open Computer Chess Championships]]. Already with a strong debut at the [[DOCCC 1982]], it won the [[DOCCC 1983]] and the [[DOCCC 1984]] both with a perfect 100% score. At the [[International Computer Chess Tournament 1984]] in [https://en.wikipedia.org/wiki/Baarn Baarn], Chess 0.5X narrowly missed the tournament win, losing the final round from [[PK|PK83]] which had zero points so far. Winner [[Merlin]] was initially based on Chess 0.5 as well <ref>[[Werner DePauli-Schimanovich-Göttig|Werner DePauli-Schimanovich]] ('''2006'''). ''[http://www.trauner.at/buchdetail.aspx?artnr=20199541 Europolis 6]''. Informatik für Spiele und Verkehr. Extension der Mengenlehre, Herausgeber: Franz Pichler, [http://www.trauner.at/Default.aspx Universitätsverlag Rudolf Trauner], ISBN 978-3-85487-946-6, (SG7) Merlin (ein ComputerChess-Programm) s. 171 (German), [http://books.google.com/books?id=Gf4WibmHVbcC&pg=PA175&lpg=PA175&source=bl&ots=YPtaHAp3Z4&sig=DNRPh11heo8Q1zS3UOBe0qoCF-8&hl=en&ei=0GmnTMX1GMfJswaL-NivDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBgQ6AEwAA#v=onepage&q&f=false Google Books]</ref> <ref>[[Helmut Horacek]], [[Marcus Wagner]] ('''1981'''). ''Das Schachprogramm Merlin, Verbesserung von Laufzeit-Effizient, Eröffnungsbibliothek und Bewertungsfunktion.'' 4. Tagung "Berichte aus Informatik-Instituten" (German)</ref>.
=See also=
* [[Chess 0.5]]
* [[Chess (Program)|Chess 4.0]]
=Publications=
* [[Wim Elsenaar]] ('''1983'''). ''Chess 0.5X'' in [[Peter van Diepen]] (ed.) ('''1983'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1982''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-1983,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201982.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1982]]
* [[Wim Elsenaar]] ('''1984'''). ''Chess 0.5X'' in [[Roger Hünen]], [[Sicco Kooi]] (eds.) ('''1984'''). ''CSVN computerschaak toernooi Leiden 1983''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/08-1984,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201983.pdf pdf] hosted by [[Hein Veldhuis]] » [[DOCCC 1983]]
=References=
<references />
'''[[Engines|Up one Level]]'''
