CREATE TABLE table_23439 ("Episode" CLOB, "First broadcast" CLOB, "Rufus guest" CLOB, "Marcus guest" CLOB, "Winner" CLOB)

When was episode 2x11 aired for the first time?
SELECT "First broadcast" FROM table_23439 WHERE "Episode" = '2x11'
SELECT "First broadcast" FROM "table_23439" WHERE "Episode" = '2x11'