[gnugo-devel] inconsistent owl results

[Arend Bayer]

This solves nngs2:310. If we get an inconsistent owl result (i.e. owl_attack
succeeds, and owl_defend claims "alive as it stands"), we try to resolve that
by calling owl_does_defend with the attack move as suggested defense.

Arend

[P.S.: Nando, I hope this does not clash with your patch in progress.]

Index: engine/dragon.c
===================================================================
RCS file: /cvsroot/gnugo/gnugo/engine/dragon.c,v
retrieving revision 1.74
diff -u -r1.74 dragon.c
--- engine/dragon.c     10 Sep 2002 15:05:42 -0000      1.74
+++ engine/dragon.c     15 Sep 2002 15:35:38 -0000
@@ -410,6 +410,15 @@
                DEBUG(DEBUG_OWL_PERFORMANCE,
                      "Inconsistent owl attack and defense results for %1m.\n",
                      str);
+               /* Let's see whether the attacking move might be the right
+                * defense:
+                */
+               dcode = owl_does_defend(dragon[str].owl_attack_point, str);
+               if (dcode != 0) {
+                 dragon[str].owl_defense_point
+                   = dragon[str].owl_attack_point;
+                 dragon[str].owl_defense_code = dcode;
+               }
              }
            }
          }