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| style="text-align:left;" | [[Chaturanga]]
! US
| [[John Poduska, Jr.]]
| [[68000]] based [https://en.wikipedia.org/wiki/Apollo_Computer Apollo] [https://en.wikipedia.org/wiki/Workstation workstation]
| [[Pascal]]
| style="text-align:left;" | [[Chess Challenger|Chess Challenger X]]
! US
| [[Dan Spracklen]], [[Kathe Spracklen]],<br/>[[Ron Nelson]] <ref>[http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=78 Excalibur Electronics] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 22, 2015 » [[Belle|Belle's]] [[Attack and Defend Maps|Attack Maps]]</ref>
| [[6502]] based System
| [[Assembly]]
! DE
| [[Matthias Engelbach]]
| [https://en.wikipedia.org/wiki/Burroughs_large_systems [Burroughs B-5500|Burroughs 7800]]
| [[Algol]]
|}
* [http://www.stmintz.com/ccc/index.php?id=113318 Cray Blity 1981?] by Joshua Lee, [[CCC]], June 02, 2000
* [http://www.stmintz.com/ccc/index.php?id=186117 Cray Blitz vs Belle [1981 North American Computer Chess Championship]] by [[José Antônio Fabiano Mendes]], [[CCC]], August 29, 2001
* [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=78 Excalibur Electronics] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 22, 2015 » [[Belle|Belle's]] [[Attack and Defend Maps|Attack Maps]], [[Excalibur Mirage]]
=External Links=
'''[[ACM North American Computer Chess Championship|Up one level]]'''
[[Category:John Portman]]
[[Category:1981]]
