. "Bulgarian Solitaire, also known as Deterministic Bulgarian Solitaire, was first described in the Russian magazine \"Kvant\" in 1980. An unknown man had shown the game to the Russian mathematician Konstantin Oskolkov, while he was travelling to Leningrad (now Saint Petersburg) to give a talk. The first solutions to the problem were found in 1981. The modern name of the puzzle (\"Bulgarian Solitaire\") was created by Henrik Eriksson of KTH Royal Institute of Technology in 1982. The famous American recreational mathematician Martin Gardner made it popular in 1983, when he wrote about the game in the renowned magazine \"Scientific American\". Many variants were invented in later years, such as Austrian Solitaire (Ethan Akin & Morton David Davis (USA), 1985), Montreal Solitaire (Chris Cannings & John Haigh (England), 1992), Carolina Solitaire (Andrej Andreev (Bulgaria), 1997), Random Bulgarian Solitaire (Serguei Popov (Brazil), 2003) and Two-handed Bulgarian Solitaire (Tim Bancroft (USA), 2004). Bulgarian Solitaire and its variants are extensively researched in Combinatorial Game Theory (CGT). Prof. Su Dor\u00E9e of Augsburg College, Minneapolis, USA, called Bulgarian Solitaire \"a somewhat distant relative of the two-player African pebble games Mancala\"."@en . "Bulgarian Solitaire, also known as Deterministic Bulgarian Solitaire, was first described in the Russian magazine \"Kvant\" in 1980. An unknown man had shown the game to the Russian mathematician Konstantin Oskolkov, while he was travelling to Leningrad (now Saint Petersburg) to give a talk. The first solutions to the problem were found in 1981. The modern name of the puzzle (\"Bulgarian Solitaire\") was created by Henrik Eriksson of KTH Royal Institute of Technology in 1982. The famous American recreational mathematician Martin Gardner made it popular in 1983, when he wrote about the game in the renowned magazine \"Scientific American\"."@en . "Bulgarian Solitaire"@en . . . .