Re: [gnugo-devel] Saphir game

[Gunnar Farneback]

Dan wrote:
> 221. Q18 kills.

I assume you mean move 222.

> 258. Should be A4. 
> 
> After this, B begins to play inside his own territory.

258 is also a play inside own territory. Later 292 at P5 is a truly
fantastic semeai mistake (--experimental-semeai does not make the
mistake).

The patch below fixes all of the play inside own territory moves.

- find_more_attack_and_defense_moves() revised

/Gunnar

Index: engine/value_moves.c
===================================================================
RCS file: /cvsroot/gnugo/gnugo/engine/value_moves.c,v
retrieving revision 1.68
diff -u -r1.68 value_moves.c
--- engine/value_moves.c        30 Nov 2002 16:20:42 -0000      1.68
+++ engine/value_moves.c        3 Dec 2002 20:32:51 -0000
@@ -192,12 +192,31 @@
              && !defense_move_reason_known(ii, unstable_worms[k])) {
            int acode = attack(aa, NULL);
            if (acode < worm[aa].attack_codes[0]) {
-             if (!cursor_at_start_of_line)
-               TRACE("\n");
-             TRACE("%ofound extra point of defense of %1m at %1m code %d\n",
-                   aa, ii, REVERSE_RESULT(acode));
-             cursor_at_start_of_line = 1;
-             add_defense_move(ii, aa, REVERSE_RESULT(acode));
+             /* Maybe attack() doesn't find the attack. Try to
+              * attack with the stored attack move.
+              */
+             int defense_works = 1;
+
+             if (trymove(worm[aa].attack_points[0], other, 
+                         "find_more_attack_and_defense_moves", 0,
+                         EMPTY, 0)) {
+               int this_acode = REVERSE_RESULT(find_defense(aa, NULL));
+               if (this_acode > acode) {
+                 acode = this_acode;
+                 if (acode >= worm[aa].attack_codes[0])
+                   defense_works = 0;
+               }
+               popgo();
+             }
+               
+             if (defense_works) {
+               if (!cursor_at_start_of_line)
+                 TRACE("\n");
+               TRACE("%ofound extra point of defense of %1m at %1m code %d\n",
+                     aa, ii, REVERSE_RESULT(acode));
+               cursor_at_start_of_line = 1;
+               add_defense_move(ii, aa, REVERSE_RESULT(acode));
+             }
            }
          }