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==Butenko's ProgramEureka==After [[Mikhail Botvinnik]] introduced his early computer chess ideas concerning [[Attack and Defend Maps|attack maps]] and [[Trajectory|trajectories]] at [https://en.wikipedia.org/wiki/Chess_Centres Moscow Central Chess Club] <ref>[http://en.chessbase.com/home/TabId/211/PostId/4007513 The last day of the “Botvinnik Memorial”] by [http://de.wikipedia.org/wiki/Anna_Denissowna_Burtassowa Anna Burtasova], [[ChessBase|ChessBase News]], September 07, 2011</ref> in 1966, with the skeptical [[Georgy Adelson-Velsky]] and others attending, he found [[Vladimir Butenko]] as supporter and collaborator. Butenko first implemented the [[Vector Attacks|15x15 vector attacks]] board representation, [[Distance#15x15|determining trajectories]] on a [[M-20]] computer in a program which apparently was a forerunner of [[Pioneer]], which also evolved to [[Butenko's programEureka]] after he refused further cooperation with Botvinnik in 1970 <ref>[http://atimopheyev.narod.ru/Frame/index.html Лингвистическая Геометрия] Бориса Штильмана, [http://translate.googleusercontent.com/translate_c?hl=de&ie=UTF8&prev=_t&rurl=translate.google.com&sl=ru&tl=en&u=http://atimopheyev.narod.ru/Frame/index.html&usg=ALkJrhjGqyvJey-MTGqcGxzMU53Od0Y7VQ Linguistic Geometry] [[Boris Stilman]] by [[Alexander Timofeev]] ([https://en.wikipedia.org/wiki/Google_Translate Google Translate])