====== Chess - Programming - Polyglot Book Format - Turn ======

**Turn** is part of the [[Chess:Programming:Polyglot Book Format:Key|Key]]

It is the exclusive or of entries from the **RANDOM_TURN** sub-array.

<WRAP info>
**NOTE:**  If White is to move then **turn** is the sole entry from the **RANDOM_TURN** sub-array. 

  * If it is Black to move, then **turn** is zero. 

</WRAP>