[gnugo-devel] owl tuning

[Gunnar Farnebäck]

This patch takes out an owl pattern which might have been okay with a
constraint but in its present form mostly wastes owl nodes. I'm not
sure what the intended purpose in strategy4:206 was, but it doesn't
seem to be very effective, at least not currently.

Regression breakage:
strategy:26     PASS D3 [D3]
global:4        PASS Q6 [Q6]
global:5        PASS O4 [O4]
nngs3:130       FAIL G6 [C7|C9]
nngs3:140       FAIL G9 [D9]
nngs4:650       PASS Q2 [Q2]
ninestones:230  PASS L17 [!P11]
ninestones:650  FAIL Q9 [Q5]
9x9:20          PASS D6 [!D5]
9x9:30          FAIL C6 [D7]
kgs:160         PASS J7 [G12|H8|J7|G7]
7 PASS
4 FAIL
Total nodes: 1660082887 3055472 13216936 (-0.11% -0.5% -0.048%)

I haven't checked the passes but the fails all have in common that the
pattern pushes some owl reading beyond owl_node_limit and the involved
moves are only occasionally relevant at all.

/Gunnar

Index: patterns/owl_defendpats.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/owl_defendpats.db,v
retrieving revision 1.120
diff -u -r1.120 owl_defendpats.db
--- patterns/owl_defendpats.db  22 Aug 2004 20:48:36 -0000      1.120
+++ patterns/owl_defendpats.db  20 Oct 2004 18:54:29 -0000
@@ -4886,18 +4887,18 @@
 ; && oplay_attack(*,a,B)
 
 
-Pattern D1136
-#tm new pattern (3.1.14)
-#See strategy:206
-#FIXME:  This pattern may match inappropriately, and
-#        probably needs a constraint.
-
-OOO    very low value
-..X
-X*.
-???
-
-:8,b,value(5)
+# Pattern D1136
+# #tm new pattern (3.1.14)
+# #See strategy:206
+# #FIXME:  This pattern may match inappropriately, and
+# #        probably needs a constraint.
+# 
+# OOO  very low value
+# ..X
+# X*.
+# ???
+# 
+# :8,b,value(5)
 
 
 Pattern D1137