CREATE TABLE table_9408 ("Club" TEXT, "Played" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Points difference" TEXT, "Bonus Points" TEXT, "Points" TEXT)

How many rounds were played in the matching resulting in a Points For score of 343?
SELECT "Played" FROM table_9408 WHERE "Points for" = '343'
SELECT "Played" FROM "table_9408" WHERE "Points for" = '343'