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_66 (goals_for INTEGER, goals_against VARCHAR, played VARCHAR)

### Question ###
What is the highest amount of goals with more than 51 goals against and less than 30 played?

### Accurate SQL ###

SELECT MAX(goals_for) FROM table_name_66 WHERE goals_against > 51 AND played < 30