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'''Stobor''',<br/>
a private chess engine by [[Tom Kerrigan]], reportedly commercially available under a different name(s) <ref>[http://www.tckerrigan.com/Chess/Stobor Stobor from Tom Kerrigan's Home Page] - Licensing</ref>.
It is named after the [https://en.wikipedia.org/wiki/Bogeyman bogeyman] character in [https[://en.wikipedia.org/wiki/Robert_A._Heinlein Category:Robert Heinlein|Robert Heinlein's]] book, [https://en.wikipedia.org/wiki/Tunnel_in_the_Sky Tunnel in the Sky] <ref>[http://www.tor.com/blogs/2011/11/beware-of-stobor-robert-a-heinleins-tunnel-in-the-sky Beware of stobor!: Robert A. Heinlein’s Tunnel in the Sky] review by [http://www.tor.com/Jo%20Walton#filter Jo Walton], November 14, 2011</ref> . Stobor is also "Robots" spelled backwards.
=Tournament Play=
Stobor played two [[World Microcomputer Chess Championship|World Microcomputer Chess Championship]], the [[WMCCC 1995]] in [https://en.wikipedia.org/wiki/Paderborn Paderborn] and the [[WMCCC 1997]] in [https://en.wikipedia.org/wiki/Paris Paris], and further the [[IPCCC 1997]] <ref>[http://www.tckerrigan.com/Chess/Stobor/Paderborn+1997 / Paderborn 1997 - Tom Kerrigan's Home Page]</ref>.
=Design=
=History=
<ref>[http://www.tckerrigan.com/Chess/Stobor Stobor from Tom Kerrigan's Home Page] - History</ref> :
The first version of Stobor in 1993 was mainly influenced by the 1978 articles by [[Peter W. Frey]] and [[Larry Atkin]] on [[Chess 0.5]] in [[Byte Magazine#BYTE310|BYTE magazine]] <ref>[[Peter W. Frey]], [[Larry Atkin]] ('''1978'''). ''[http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6d5ba2 Creating a Chess Player].'' An Essay on Human and Computer Chess Skill, [[Byte Magazine#BYTE310|BYTE, Vol. 3, No. 10]]</ref> using attack [[Bitboards|bitboards]]. After discussions with [[Bruce Moreland]] at [[Internet Chess Club|ICC]], the 1995 rewrite introduced [[Ferret]] or [[GNU Chess|GNU Chess 3]] like [[Table-driven Move Generation|precomputed move tables]], while the 1999 rewrite stuck with [[0x88]]. A first version of a [[Parallel Search|parallel search]] was written in 2002 on a dual Pentium II, optimized in 2016 for 16 cores <ref>[http://www.talkchess.com/forum/viewtopic.php?t=63023 Good parallel speedup with ABDADA and cutoff checks] by [[Tom Kerrigan]], [[CCC]], February 03, 2017</ref>. In 2004, Stobor's evaluation function was redesigned as mentioned.
=See also=
* [[Various Classifications#:Category:Demonology|Demonology]]* [[Various Classifications#:Category:Fiction|Fiction]]
=Forum Posts=
'''[[Engines|Up one Level]]'''
[[Category:Demonology]]
[[Category:Fiction]]
[[Category:Robert Heinlein]]
