Question: What home team has a tie no of 20?
SQL: SELECT "Home team" FROM "2-18657589-1" WHERE "Tie no" = '20';

Question: What date was the score 3–3, and away team was Barnet?
SQL: SELECT "Date" FROM "2-18657589-1" WHERE "Score" = '3–3' AND "Away team" = 'Barnet';

Question: What is the Tie no when Wimbledon is the home team?
SQL: SELECT "Tie no" FROM "2-18657589-1" WHERE "Home team" = 'Wimbledon';

Question: What is the score when the Tie no is Replay, and the away team is York City?
SQL: SELECT "Score" FROM "2-18657589-1" WHERE "Tie no" = 'Replay' AND "Away team" = 'York City';

Question: What is the Tie no when Chester is the away team?
SQL: SELECT "Tie no" FROM "2-18657589-1" WHERE "Away team" = 'Chester';