Alexander Kristov Tsvetkov (Cwetkow) (7 October 1914, Topolovgrad

Topolovgrad

Topolovgrad is a town in south-central Bulgaria, part of Haskovo Province, situated at the northern foot of the Sakar Mountain. It is the administrative centre of the homonymous Topolovgrad Municipality...

, Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

 - 1990) a Bulgarian chess

Chess

Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...

 master.

In April 1936, he won a game against Alexander Alekhine

Alexander Alekhine

Alexander Alexandrovich Alekhine was the fourth World Chess Champion. He is often considered one of the greatest chess players ever.By the age of twenty-two, he was already among the strongest chess players in the world. During the 1920s, he won most of the tournaments in which he played...

 at Alekhine's Simultaneous Exhibition in Sofia. He was Bulgarian Champion

Bulgarian Chess Championship

The Bulgarian Chess Championship is an event inaugurated in 1933 to crown the best chess player in Bulgaria. The championship has been held on a nearly annual basis since, with only a few years missed...

 in 1938, 1940 (jointly), 1945, 1948 (jointly), 1950, and 1951.

Tsvetkov represented Bulgaria in Chess Olympiads.

• In 1936, at second board in 3rd unofficial Olympiad in Munich (+3 –13 =2);
• In 1939, at first board in the 8th Chess Olympiad
  8th Chess Olympiad
  The 8th Chess Olympiad, organised by the Fédération Internationale des Échecs , comprised an 'open' tournament, as well as a Women's World Championship contest...
  
   in Buenos Aires (+7 –5 =4);
• In 1954, at fourth board in the 11th Chess Olympiad
  11th Chess Olympiad
  The 11th Chess Olympiad, organized by the FIDE and comprising an open and women's tournament, as well as several events designed to promote the game of chess, took place between September 4 and September 25, 1954, in Amsterdam, Netherlands...
  
   in Amsterdam (+2 –2 =7);
• In 1956, at first reserve board in the 12th Chess Olympiad
  12th Chess Olympiad
  The 12th Chess Olympiad, organized by the FIDE and comprising an open and women's tournament, as well as several events designed to promote the game of chess, took place between August 31 and September 25, 1956, in Moscow, Soviet Union.-References:...
  
   in Moscow (+3 –1 =5).

In September 1942, he tied for 7-8th in Munich (Wertungsturnier – Qualification Tournament; Gösta Danielsson

Gösta Danielsson

Gösta Erik Vilhelm Danielsson was a Swedish chess master.He took 4th at Stockholm 1934 , tied for 3rd-4th at Falun 1934 , tied for 3rd-4th, behind Paul Felix Schmidt and Paul Keres, at Tallinn 1935, and won at Göteborg 1935 .In September 1935, he...

 won) at Europameisterschaft (European Championship; Alekhine won).

After World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, he played for Bulgaria in some friendly matches: BUL–CSR (1949), BUL–GDR (1953), BUL–RUS (1958).

In 1947, he took 16th in Moscow (1st Chigorin Memorial; Mikhail Botvinnik

Mikhail Botvinnik

Mikhail Moiseyevich Botvinnik, Ph.D. was a Soviet and Russian International Grandmaster and three-time World Chess Champion. Working as an electrical engineer and computer scientist at the same time, he was one of the very few famous chess players who achieved distinction in another career while...

 won). In 1947, he took 10th in Hilversum (zonal; Albéric O'Kelly de Galway

Albéric O'Kelly de Galway

Albéric O'Kelly de Galway was a Belgian chess Grandmaster , and an International Correspondence Chess Grandmaster , most famous for being the third ICCF World Champion in correspondence chess between 1959 and 1962. He was also a chess writer...

 won). In 1951, he tied for 13-14th in Mariánské Lázně (Marienbad, zonal; Luděk Pachman

Ludek Pachman

Luděk Pachman was a Czechoslovak-German chess grandmaster, chess writer, and political activist. In 1972, after being imprisoned and tortured almost to death by the Communist regime in Czechoslovakia, he was allowed to emigrate to West Germany...

 won). In 1964, he tied for 4-9th in Polanica Zdrój (Rubinstein Memorial).

Tsvetkov was awarded the International Master (IM) title in 1950.