Israeli chess officials demanded Thursday that this summer's world chess championships be moved, after host Libya said it would bar Israeli players. Libya's announcement ended expectations that the chess tournament could help improve relations between the longtime Mideast enemies. "We did not and will not invite the Zionist enemy to this championship," Mohammed Gadhafi, son of Libyan leader Muammar Gadhafi, told a news conference Wednesday. In response, the Israeli Chess Association demanded that the World Chess Federation, known as FIDE, move the championship from Libya, said spokesman Yerach Tal. "We demand that it be held in a country that will...