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_23286112_12 (series VARCHAR, date VARCHAR)

### Question ###
Which series were played on April 18?

### Accurate SQL ###

SELECT series FROM table_23286112_12 WHERE date = "April 18"