Table schema:
CREATE TABLE table_name_1 (cf_wins INTEGER, cup_wins VARCHAR, team VARCHAR, cf_appearances VARCHAR, last_cf VARCHAR)

Question: What is the lowest number of cf wins of the chicago blackhawks, which has more than 4 cf appearances, a last cf in 2013, and more than 2 cup wins?
SQL: SELECT MIN(cf_wins) FROM table_name_1 WHERE cf_appearances > 4 AND last_cf = 2013 AND team = "chicago blackhawks" AND cup_wins > 2