Mariano Castillo
Mariano Castillo Larenas was a Chilean chess master.
He won nine times Chilean Chess Championship.
Castillo participated in several international tournaments where took 8th at Mar del Plata it 1928, tied for 6-10th at Buenos Aires 1934/35, tied for 9-10th at Mar del Plata 1936, took 6th at Aguas de Sao Pedro/São Paulo 1941, took 3rd, behind Guimard and Miguel Najdorf, at Viña del Mar 1945, took 6th at Viña del Mar 1947, tied for 14-15th at Mar del Plata 1948, tied for 15-16th at Mar del Plata 1950, took 9th at Venice 1950, and tied for 14-15th at Mar del Plata 1954.
He played twice at first board for Chile in Chess Olympiads:
