Finally I finished to resolve:
if the url to redirect, since 404 is generated
www.sololocal.info/solo-noticias/de-bahía/solidaridad-con-el-juez-baltazar-garzón-1679.html
Should be placed
www.sololocal.info/solo-noticias/de-bah% C3% ADa / solidarity-with-the-judge-baltazar-Garza% C3% B3n-1679.html
So if redirected to the new url where friendly (after labor pains with shs404sef component) which is
www.sololocal.info/noticias/1-de-bahia/1679-solidaridad-con-el-juez-baltazar-garzon.html
Thanks anyway. And I take this opportunity to suggest to all joomleros to be very careful with some extensions like shs404sef. It gives more problems than solutions. but not this extension of you, in addition to being easy, simple and effective is free. Again congratulations on your work. For years I have worked with Joomla and I can not wait to recommend your work as a forum to know and all my students. A hug!