Mariano Castillo Larenas (25 December 1905 – 23 September 1970) was a Chilean 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.

He won nine times Chilean Chess Championship (1924, 1926, 1927, 1929, 1934, 1940, 1947, 1949, and 1953).

Castillo participated in several international tournaments where took 8th at Mar del Plata it 1928 (Roberto Grau

Roberto Grau

Roberto Gabriel Grau was an Argentine chess master.Grau played in many Argentine championships. In 1921/22, he tied for 3rd-4th . In 1922, he tied for 2nd-3rd . In 1923/24, he tied for 2nd-4th...

 won), tied for 6-10th at Buenos Aires 1934/35 (South American Chess Championship

South American Chess Championship

The first South American Chess Championship was held in Montevideo , Uruguay, on December 25, 1921 – January 22, 1922...

, Luis Piazzini

Luis Piazzini

Luis Roberto Piazzini was an Argentine chess master.He participated many times in Argentine championships, and was an Argentine Champion in 1933 winning ARG-ch Torneo Mayor and a match for the title against Jacobo Bolbochán...

 won), tied for 9-10th at Mar del Plata 1936 (Isaias Pleci

Isaias Pleci

Isaías Pléci was an Argentine chess master.-Chess tournaments:Pléci was the Argentine Champion in 1929 to 1930. He won at Buenos Aires 1928 and lost a match for the title to Roberto Grau . later, he won in 1929 and won a match against Grau in 1930...

 won), took 6th at Aguas de Sao Pedro / São Paulo 1941 (Erich Eliskases

Erich Eliskases

Erich Gottlieb Eliskases was a chess Grandmaster of the 1930s and 1940s, who represented Austria, Germany and Argentina in international competition....

 and Carlos Guimard

Carlos Guimard

Carlos Enrique Guimard was an Argentine chess Grandmaster. He was born in Santiago del Estero.-Biography:Guimard was thrice Argentine Champion. In 1936, he won the ARG-ch 15 Mayor, and in 1937 a match for the title against Roberto Grau . In 1937/38, he won a match against Luis Piazzini...

 won), took 3rd, behind Guimard and Miguel Najdorf

Miguel Najdorf

Miguel Najdorf was a Polish-born Argentine chess grandmaster of Jewish origin, famous for his Najdorf Variation....

, at Viña del Mar 1945, took 6th at Viña del Mar 1947 (Gideon Stahlberg

Gideon Ståhlberg

Anders Gideon Tom Ståhlberg was a Swedish chess grandmaster.He won the Swedish Chess Championship of 1927, became Nordic champion in 1929, and held it until 1939....

 won), tied for 14-15th at Mar del Plata 1948 (Eliskases won), tied for 15-16th at Mar del Plata 1950 (Svetozar Gligorić

Svetozar Gligoric

Svetozar Gligorić is a Serbian chess grandmaster. He won the championship of Yugoslavia a record twelve times, and is considered the best player ever from Serbia...

 won), took 9th at Venice 1950 (Alexander Kotov

Alexander Kotov

Alexander Alexandrovich Kotov was a Soviet chess grandmaster and author. He was a Soviet champion, a two-time world title Candidate, and a prolific chess author. Kotov served in high posts in the Soviet Chess Federation and most of his books were written during the period of Cold War between the...

 won), and tied for 14-15th at Mar del Plata 1954 (zonal, Oscar Panno

Oscar Panno

Oscar R. Panno is an Argentine chess Grandmaster.Panno won the World Junior Chess Championship in 1953, and also won the championship of Argentina the same year....

 won).

He played twice at first board for Chile in Chess Olympiads:

• 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...
  
   at Buenos Aires 1939 (+2 –9 =4);
• In the 9th Chess Olympiad
  9th Chess Olympiad
  The 9th 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 20 and September 11, 1950, in Dubrovnik, SR Croatia, Yugoslavia .The final results were as follows:-Final :The...
  
  at Dubrovnik 1950 (+3 –6 =6).

External links

• http://www.chessgames.com/perl/chessplayer?pid=23455