From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Wed, 27 Jan 2016 10:22:42 +0000 (+0100)
Subject: Fix book probing
X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=commitdiff_plain;h=6768207263f5dc1eb1a6629ed7b1367a8ca3aa45

Fix book probing

The Zobrist key for Kings had been inadvertantly changed in the patch that
assigned new keys to the pieces added for Chu Shogi (the 'chu-promoted
series'), because the King would be considered as a chu-promoted piece.
---

diff --git a/book.c b/book.c
index 090ae1b..6a257d8 100644
--- a/book.c
+++ b/book.c
@@ -315,7 +315,7 @@ hash (int moveNr)
             if(p != EmptySquare){
 		    int j = (int)p, promoted = 0;
 		    j -= (j >= (int)BlackPawn) ? (int)BlackPawn :(int)WhitePawn;
-		    if(j >= CHUPROMOTED WhitePawn) promoted++, j -= CHUPROMOTED WhitePawn;
+		    if(j >= WhiteTokin && j != WhiteKing) promoted++, j -= WhiteTokin;
 		    if(j > (int)WhiteQueen) j++;  // make space for King
 		    if(j > (int) WhiteKing) j = (int)WhiteQueen + 1;
 		    p_enc = 2*j + ((int)p < (int)BlackPawn);