From f291ebb82c8526872876dafa1a42f49fb85bedaa Mon Sep 17 00:00:00 2001
From: Petr Baudis <pasky@ucw.cz>
Date: Fri, 18 Nov 2011 04:18:15 +0100
Subject: [PATCH] Autobook Walk: Start simulation by the opponent's move

This way, the tree always measures the performance of _us_ playing the move.
---
 tools/autobook/walk.sh | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/tools/autobook/walk.sh b/tools/autobook/walk.sh
index 97dd693..7d4cd7a 100755
--- a/tools/autobook/walk.sh
+++ b/tools/autobook/walk.sh
@@ -56,13 +56,16 @@ echo "   *** Sequence: $seq"
 echo "(;FF[4]GM[1]CA[UTF-8]RU[Chinese]SZ[9]HA[0]KM[7.5]PW[white]PB[black]$seq)" >"$SEQDIR/a.sgf"
 rm -f "$SEQDIR"/r*
 
-if [ $((RANDOM%2)) = 1 ]; then
-	black="$pachi"
-	white="$opponent"
-else
-	black="$opponent"
-	white="$pachi"
-fi
+# last move has been... - we want to simulate this being _our_ move yet,
+# i.e. start the simulation with the opponent to play
+case $color in
+	B)
+		black="$pachi"
+		white="$opponent";;
+	W)
+		black="$opponent"
+		white="$pachi";;
+esac
 $twogtp_path -black "$black" -white "$white" -auto -verbose -size 9 -komi 7.5 -sgffile "$SEQDIR/r" -games 1 -openings "$SEQDIR"
 wincolor=$(cat "$SEQDIR"/r-0.sgf | sed -ne 's/.*RE\[\(.\).*/\1/p')
 case $wincolor in
-- 
2.11.4.GIT