第2個還可信直到讀到加藤部份

can't negate the story just by the weiqi part:

Google Fernando Aguilar.

Fernando Aguilar (b. 1959), Argentinian amateur 6-dan player. In October 2001 he won the 3rd Iberoamerican Go Championship to qualify for the 1st Toyota & Denso Cup, where he caused an upset. He defeated Hasegawa Sunao 9-dan, one of the Kansai Ki-in's top players, in the first round on March 19th 2002. In the second round, on September 2nd 2002, he then beat Yo Kagen 9 dan

http://senseis.xmp.net/?FernandoAguilar