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The study by [https://en.wikipedia.org/wiki/K%C4%81rlis_B%C4%93ti%C5%86%C5%A1 Kārlis Bētiņš] (Carl Behting), first published in the magazine [https://en.wikipedia.org/wiki/Bohemia_(newspaper) Bohemia] in 1906 <ref>[https://chessru.stackexchangewikipedia.comorg/questionswiki/13216/is-behting-study-still%D0%91%D0%B5%D1%82%D0%B8%D0%BD%D1%8C%D1%88,_%D0%9A%D0%B0%D1%80%D0%BB%D0%B8%D1%81_%D0%9A%D0%B0%D1%80%D0%BB%D0%BE%D0%B2%D0%B8%D1%87#%D0%AD%D1%82%D1%8E%D0%B4%D1%8B Бетиньш, Карлис Карлович -beating-computers Is Behting Study Still Beating Computers?Этюды], Chess Stack Exchange, January 01, 2016</ref>.