Re: [gnugo-devel] Opponent follow-up value and group connection

[SP LEE]

This is a more careful treatment for larger dragons. Please ignore my
previous patch. The fix here is like "forget the shape factor if either
attacking or defending a dragon of more than 20 points is involved." This
kind of play can be seen even in professional games.

SP Lee

Index: value_moves.c
===================================================================
RCS file: /cvsroot/gnugo/gnugo/engine/value_moves.c,v
retrieving revision 1.92
diff -u -r1.92 value_moves.c
--- value_moves.c 12 May 2003 08:50:42 -0000 1.92
+++ value_moves.c 13 May 2003 20:34:46 -0000
@@ -2636,7 +2636,9 @@
     if (move[pos].secondary_value != 0.0)
       TRACE("  %1m: %f - secondary\n", pos, 0.05 *
move[pos].secondary_value);

-    if (move[pos].numpos_shape + move[pos].numneg_shape > 0) {
+    if ((move[pos].numpos_shape + move[pos].numneg_shape > 0)
+  && (move[pos].territorial_value < 20)){
+  /* for attack/defend large dragon, ignore shape factor */
       /* shape_factor has already been computed. */
       float old_value = tot_value;
       tot_value *= shape_factor;