[gnugo-devel] owl blunder

[Paul Pogonyshev]

this patch adds a new test taken from my yesterday game against gnugo.
Gunnar and me found a solution for it, but it is not very good, since
owl still sees 4 different moves to save the white dragon (from my
quick analyzis it looks like 2 of them are wrong and one leads to a
good ko). the eye pattern from the patch just removes the top-valued
move of which owl thought it saved the dragon. besides, the pattern
must probably look like

 .XX
(..*.
-----

:1122

but then gnugo choses that '(' as an attack point and fails the test.

maybe it's better to just add the test and postpone this clumsy
solution.

Paul


new test:

loadsgf games/pogonyshev-gnugo-200210141226.sgf 62
287 owl_defend H8
#? [1 H6]*


Index: gnugo/patterns/eyes.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/eyes.db,v
retrieving revision 1.22
diff -u -r1.22 eyes.db
--- gnugo/patterns/eyes.db      16 Sep 2002 07:27:49 -0000      1.22
+++ gnugo/patterns/eyes.db      15 Oct 2002 19:03:40 -0000
@@ -5323,9 +5323,9 @@
 :1111
 
 
-#           . .
-#Topology:  . .
-#          ....
+#            . .
+# Topology:  . .
+#           ....
 
 Pattern 8041
 # tm New Pattern (3.1.20) (see viking:9)
@@ -5335,6 +5335,19 @@
  .X..
 
 :1122
+
+#           ...
+# Topology: .....
+#
+
+Pattern 8050
+
+ .XX
+!..*.
+-----
+
+:1122
+
 
 
 ###############################