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_46 ( tournament VARCHAR, moves VARCHAR, black VARCHAR, result VARCHAR )

### Question ###
What is Tournament, when Black is 'Kramnik', when Result is ' ', and when Moves is '40'?

### Accurate SQL ###

SELECT tournament FROM table_name_46 WHERE black = "kramnik" AND result = "½–½" AND moves = 40