🚀 go-pugleaf

GNU Chess patchlevel 57 has been placed on prep.ai.mit.edu
(18.71.0.38) in pub/gnu/gnuchess-4.0.pl57.tar.Z. The changes
to this version (from the ChangeLog) are listed below. 

GNU Chess:

Fri Aug 14 Patchlevel 57 Ben Hurwitz (bug fixes) Thierry Leconte (book)
	* Both/force interaction improved.
	* Bug fix to possibles declaration and OR of move with BADMOVE
	* Work better with GM John Nunn book (take care of order of
	  lines, don't null the book for at least 3 moves after taken out
	  of book, no random opening)
	* Removed exit of program when drawn game detected.
	* Fixed bug that caused program to make 1-move blunders.
	  (transposition table caused return 0 when position seen before
	   to detect draw which then gets a depth bonus since search
	   is inexact so it ends up looking better to make a repetition
	   than making a winning 1-mover!)