Question: What is the Score of the game with Arsenal win 4-2 on penalties in the attendance field?
SQL: SELECT "Score" FROM "2-15786635-6" WHERE "Attendance" = 'Arsenal win 4-2 on penalties';

Question: What team was the Away team when the Tie no was 3?
SQL: SELECT "Away team" FROM "2-15786635-6" WHERE "Tie no" = '3';

Question: What is the Tie no when the away team was Burnley?
SQL: SELECT "Tie no" FROM "2-15786635-6" WHERE "Away team" = 'Burnley';

Question: What shows for Tie no when Sheffield United was the Away team?
SQL: SELECT "Tie no" FROM "2-15786635-6" WHERE "Away team" = 'Sheffield United';