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_79618 ( "Player" text, "Played" real, "Legs Won" real, "Legs Lost" real, "100+" real, "140+" real, "180s" real, "High Checkout" real, "3-dart Average" real )

### Question ###
What is the number of high checkout when legs Lost is 17, 140+ is 15, and played is larger than 4?

### Accurate SQL ###

SELECT SUM("High Checkout") FROM table_79618 WHERE "Legs Lost" = '17' AND "140+" = '15' AND "Played" > '4'