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_18173916_6 (episodes VARCHAR, tuesday VARCHAR)

### Question ###
What were the dates when 224 Assassin's Creed: Brotherhood Circus Training was shown on Tuesday?

### Accurate SQL ###

SELECT episodes FROM table_18173916_6 WHERE tuesday = "224 Assassin's Creed: Brotherhood Circus Training"