Boris de Greiff Bernal (13 February 1930 – 31 October 2011) was a Colombian chess master and writer, born in Medellín and son of the Colombian poet León de Greiff. Student in San Bartolome Mayor School], in 1951, he won the Colombian Championship in Bogotá. In 1955, he took 16th in Mar del Plata (Borislav Ivkov won). In 1957, he won in Caracas (zonal). In 1958, he took 20th in Portorož (interzonal; Mikhail Tal won). In 1958, he took 9th in Bogotá (Oscar Panno won). In 1962, he took 18th in Havana (1st Capablanca Memorial; Miguel Najdorf won). In 1963, he took 20th in Havana (2nd Capablanca Memorial; Viktor Korchnoi won). In 1963, he took 7th in Havana (Torneo Panamericano; Eleazar Jiménez won). In 1969, he tied for 1st–2nd with Miguel Cuéllar in Bogotá. In 1970, he tied for 8–10th in Bogot