While Larissa Kelly’s fans await her return to “Jeopardy!” during the week of March 31 – April 4, the show is receiving attention because of Arthur Chu, a player who has won four games by betting more on strategy than breadth of knowledge. Chu was on today’s “Here and Now” radio program on WBUR in Boston. Whether or not Chu’s success continues won’t be known until after this week’s 1980’s Battle of the Decades.