A University of Idaho senior competing on television's "Jeopardy!" quiz game is well on his way to covering this year's tuition hike -- and then some.  Mark Runsvold has already won three games, advancing to the show's winner's circle. Runsvold, who along with other UI students faces an 8.4 percent tuition hike, is a senior in the Moscow school's College of Letters Arts and Social Sciences. Hailing from Moscow, Runsvold says his main aim was on the show was not embarrass himself. Fortunately, Runsvold says, now he's won at least $103,000. Runsvold says he prepared for the show by skimming trivia on the Internet -- and by reading Jeopardy champion Ken Jennings' memoir of his remarkable winning streak on the show in 2004 when he won a record 74 games.