CREATE TABLE "league_table" (
  "club" text,
  "played" text,
  "drawn" text,
  "lost" text,
  "points_for" text,
  "points_against" text,
  "points_difference" text,
  "bonus_points" text,
  "points" text
);

Question: How many rounds were played in the matching resulting in a Points For score of 343?
SQL: SELECT "played" FROM "league_table" WHERE "points_for"='343';