From 72b198f0b7575ff63748b7c02b1572ed162aef04 Mon Sep 17 00:00:00 2001
From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Sat, 16 Jan 2010 14:26:36 +0100
Subject: [PATCH] Fix eval flip on WB color commands

The differential eval Q was not flipped when the WB-protocol command
black or white did change the side to move.
---
 fairymax.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fairymax.c b/fairymax.c
index 4db818e..e615fd4 100644
--- a/fairymax.c
+++ b/fairymax.c
@@ -623,12 +623,14 @@ int main(int argc, char **argv)
 		}
 		if (!strcmp(command, "white")) {
                         /* set white to move in current position */
+                        if(Side == BLACK) Q = -Q;
                         Side     = WHITE;
                         Computer = BLACK;
 			continue;
 		}
 		if (!strcmp(command, "black")) {
                         /* set blck to move in current position */
+                        if(Side == WHITE) Q = -Q;
                         Side     = BLACK;
                         Computer = WHITE;
 			continue;
-- 
1.7.0.4