Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_20 (goals_for INTEGER, goal_difference VARCHAR, goals_against VARCHAR)

### Question ###
What is the fewest goals for when goal difference is +10 and goals against is more than 61?

### Accurate SQL ###

SELECT MIN(goals_for) FROM table_name_20 WHERE goal_difference = "+10" AND goals_against > 61