SINCHON, South Korea

A PERSON could know South Korea for a long time without knowing Wanju, an obscure county 112 miles south of Seoul. And, at least until recently, a person could know a lot about Wanju without ever hearing of Cha Sa-soon, a 69-year-old woman who lives alone in the mountain-ringed village of Sinchon.

Now, however, Ms. Cha is an unlikely national celebrity.

This diminutive woman, now known nationwide as “Grandma Cha Sa-soon,” has achieved a record that causes people here to first shake their heads with astonishment and then smile: She failed her driver’s test hundreds of times but never gave up. Finally, she got her license  on her 960th try.

For three years starting in April 2005, she took the test once a day five days a week. After that, her pace slowed, to about twice a week. But she never quit.

Hers is a fame based not only on sheer doggedness, a quality held in high esteem by Koreans, but also on the universal human sympathy for a monumental  and in her case, cheerful  loser.