Question: When the Altrincham was the home team what was the tie no?
SQL: SELECT "Tie no" FROM "2-18569929-6" WHERE "Home team" = 'Altrincham';

Question: Crawley Town as the home team has what as the tie no?
SQL: SELECT "Tie no" FROM "2-18569929-6" WHERE "Home team" = 'Crawley Town';