Rodolfo Tan Cardoso (25 December 1937[1] – 21 August 2013) was a Filipino chess player. He was awarded the International Master title by FIDE in 1957,[1] making him the first Asian to achieve it.
Cardoso was born in Anda, Pangasinan. In 1956, he won Philippine Junior Championship. In 1957, he took fifth place in the fourth World Junior Championship in Toronto, which was won by William Lombardy with a perfect score of 11–0. In the same year, the Pepsi-Cola company sponsored an eight-game match in New York City between Cardoso, the 19-year-old Philippine junior champion, and Bobby Fischer, the 14-year-old U.S. junior champion. He was the only Filipino to beat Fischer. Fischer claimed the $325 victor's prize with a 6−2 score (+5 –1 =2).[2]
In 1957/58, Cardoso won the zonal tournament in Baguio City, thus qualifying him for the 1958 PortorožInterzonal tournament, in which he finished 19th (Mikhail Tal won). In this tournament he scored an upset win over David Bronstein in the final round, thereby denying him a place in the 1959 Candidates' Tournament but also allowing Fischer a place in the candidates. He was Philippine Champion in 1958 and 1963. He took second place at Christchurch 1967 (New Zealand championship, won by Yuri Averbakh). In 1974, he tied for first through fourth place in Casablanca. In 1974, he took 14th in Manila (Evgeni Vasiukov won). In 1975, he tied for 13-14th in Orense. In 1975, he took 10th in Las Palmas (Ruy Lopez Memorial tournament, won by Ljubomir Ljubojević).
