CREATE TABLE "table1_19930660_2" (
  "episode" text,
  "first_broadcast" text,
  "rufus_guest" text,
  "marcus_guest" text,
  "winner" text
);

Question: When was episode 2x11 aired for the first time?
SQL: SELECT "first_broadcast" FROM "table1_19930660_2" WHERE "episode"='2x11';

Question: Who won the episode in which Sean Lock was Rufus's guest?
SQL: SELECT "winner" FROM "table1_19930660_2" WHERE "rufus_guest"='Sean Lock';

Question: When was the episode 2x10 aired for the first time?
SQL: SELECT "first_broadcast" FROM "table1_19930660_2" WHERE "episode"='2x10';

Question: Who was Marcus's guest in the episode when Rufus's guest was Rory McGrath?
SQL: SELECT "marcus_guest" FROM "table1_19930660_2" WHERE "rufus_guest"='Rory McGrath';