Question: What was the 1st leg of the match that had an aggregate of 4-3?
SQL: SELECT "1st leg" FROM "2-14013701-4" WHERE "Agg." = '4-3';

Question: What was the 2nd leg fo the match that had a 1st leg of 1-3 and aggregate of 1-6?
SQL: SELECT "2nd leg" FROM "2-14013701-4" WHERE "1st leg" = '1-3' AND "Agg." = '1-6';