[gnugo-devel] minor tuning patch

[Evan Berggren Daniel]

A few changes to patterns.

regression delta:

viking:1        FAIL    this looks real, but not too bad.
nngs:1680       PASS    real
trevord:880     PASS    real
nngs4:600       PASS    real
nngs4:810       pass    (FAIL in evand_5_4.1) direct result of removal of
Fuseki1000; real.
nngs4:820               no change, but improved valuation of correct move.
(test is in evand_5_4.1)
century2002:140 PASS    real
9x9:10          PASS    real, one of the targeted testcases.

This patch should reduce the general incidence of gnugo playing this move:

OO..
XX..
..*.
O...

which is almost always the wrong thing to do.  See eg 9x9:10.

Evan Daniel

Index: patterns/fuseki19.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/fuseki19.db,v
retrieving revision 1.9
diff -u -d -r1.9 fuseki19.db
--- patterns/fuseki19.db        19 Nov 2003 07:53:49 -0000      1.9
+++ patterns/fuseki19.db        14 Jan 2004 19:58:56 -0000
@@ -27884,32 +27884,33 @@
 :8,-,value(6)


-Pattern Fuseki1000
-# 5/15
-
-+-------------------+
-|...................|
-|...................|
-|...................|
-|...O.....X.....X...|
-|...................|
-|...................|
-|...................|
-|...................|
-|...................|
-|...............X...|
-|...................|
-|...................|
-|...................|
-|...................|
-|.............*.....|
-|...O...........X...|
-|.............O.....|
-|...................|
-|...................|
-+-------------------+
-
-:8,-,value(5)
+# evand removed (3.5.4)
+#Pattern Fuseki1000
+## 5/15
+#
+#+-------------------+
+#|...................|
+#|...................|
+#|...................|
+#|...O.....X.....X...|
+#|...................|
+#|...................|
+#|...................|
+#|...................|
+#|...................|
+#|...............X...|
+#|...................|
+#|...................|
+#|...................|
+#|...................|
+#|.............*.....|
+#|...O...........X...|
+#|.............O.....|
+#|...................|
+#|...................|
+#+-------------------+
+#
+#:8,-,value(5)


 Pattern Fuseki1001
Index: patterns/patterns.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns.db,v
retrieving revision 1.121
diff -u -d -r1.121 patterns.db
--- patterns/patterns.db        7 Jan 2004 10:00:20 -0000       1.121
+++ patterns/patterns.db        14 Jan 2004 19:58:57 -0000
@@ -6868,7 +6868,7 @@
 .....
 -----

-:8,OXec
+:8,OXec,shape(-0.5)

 ??.??
 O.*.O
@@ -8342,6 +8342,16 @@

 :8,OXe

+Pattern CB243
+#evand new (3.5.4)
+
+?oo?           extend in center
+...?
+.*.?
+?OX?
+?ox?
+
+:8,OXead

 Pattern CB246

@@ -10984,6 +10994,26 @@

 ;weak(a) && weak(B) && x_somewhere(c,d)

+Pattern ED97
+# evand new Pattern (3.5.4)
+
+.....
+O.*.x
+O...x
+.....
+.....
+-----
+
+:8,OXed
+
+.....
+A.*.b
+A...c
+.....
+.....
+-----
+
+;x_alive_somewhere(b,c) && weak(A)

 #####################################################################
 #
@@ -11709,13 +11739,16 @@
 Pattern CD107
 # db added (3.1.8)
 # gf Added O classification. (3.1.12)
+# evand modified (3.5.4)

+?x.??
 xX..?        good shape keima
 ..*.?
 O...?

 :8,OXead

+?x.??
 xX..?
 .a*.?
 Abc.?
@@ -11723,7 +11756,7 @@
 ; !dead(A) && oplay_attack(*,a,b,c,c)


-Pattern CD108
+Pattern CD108a
 # db added (3.1.8)
 # Exception to CD107

@@ -11733,6 +11766,17 @@

 :8,-,shape(-3)

+#Pattern CD108b
+## evand added (3.5.4)
+## exception to CD107
+#
+#?O..
+#xX..
+#..*.
+#O...
+#
+#:8,-,shape(-3)
+#

 Pattern CD109
 # gf New pattern. (3.3.18)