move with the highest weight is selected.
BookLearn (default: false)
- Store learning information in the book (which must be writable).
- Currently no engine actually uses this information.
+ This is a noop.
BookDepth (default: 256)
Stop using the book after this number of moves.
- 2010-12-31 POLYGLOT(6)
+ 2012-09-17 POLYGLOT(6)