Index: engine/value_moves.c
===================================================================
RCS file: /cvsroot/gnugo/gnugo/engine/value_moves.c,v
retrieving revision 1.152
diff -u -p -r1.152 value_moves.c
--- engine/value_moves.c	25 Sep 2005 20:30:02 -0000	1.152
+++ engine/value_moves.c	26 Sep 2005 18:16:10 -0000
@@ -2303,6 +2302,7 @@ estimate_territorial_value(int pos, int 
 	   || move_reasons[r].type == OWL_ATTACK_MOVE_BAD_KO)
 	  && dragon[aa].size == worm[aa].size
 	  && worm[aa].attack_codes[0] == WIN
+	  && worm[aa].defense_codes[0] != 0
 	  && attack_move_reason_known(pos, aa) != WIN) {
 	if (large_scale)
 	  this_value = (2.0 + 0.05 * (2 * worm[aa].effective_size));