[gnugo-devel] more strategic defense moves

[Arend Bayer]

Letting groups get weak and finally die is still one of GNU Go's main
weaknesses. I have often seen that urgent moves did not even get
a strategic defense bonus.

So this patch tries to address this by adding a "d" classification to 
all fuseki type patterns where it seems obvious to me; it also adds a
pattern to do a small knights extension from the 4th line when a longer
extension is blocked.

No regression changes, but I am positive this does improve things 
(mostly by making it possible to concentrate on getting the valuation
of these moves right).

Arend

Index: patterns/fuseki.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/fuseki.db,v
retrieving revision 1.38
diff -u -p -r1.38 fuseki.db
--- patterns/fuseki.db  3 Mar 2004 22:14:12 -0000       1.38
+++ patterns/fuseki.db  21 Aug 2004 20:42:33 -0000
@@ -1188,6 +1188,27 @@ O..*..cdx
 ; x_alive_somewhere(a,b,c,d)
 
 
+Pattern F410f
+
+??..?x?
+oO...xx
+o..*.xx
+......?
+......?
+-------
+
+:8,ed
+
+??..?x?
+oO...ax
+o..*.bx
+......?
+......?
+-------
+
+; x_alive_somewhere(a,b)
+
+
 Pattern F411
 # gf Revised pattern. (3.3.17)
 
Index: patterns/patterns.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns.db,v
retrieving revision 1.128
diff -u -p -r1.128 patterns.db
--- patterns/patterns.db        8 Jun 2004 01:51:48 -0000       1.128
+++ patterns/patterns.db        21 Aug 2004 20:42:35 -0000
@@ -3397,15 +3397,15 @@ X.*..
 
 Pattern EB4
 
-?X??.     slide
+?X?o.     slide
 ...O.
 .*...
 .....
 -----
 
-:8,OXe
+:8,OXed
 
-?X??.
+?X?o.
 ..ac.
 .*b..
 .....
@@ -3422,7 +3422,7 @@ oO....
 ......
 ------
 
-:8,OXe
+:8,OXed
 
 
 Pattern EB6
@@ -3492,7 +3492,7 @@ Pattern EB11
 ......
 ------
 
-:8,OXe
+:8,OXed
 
 
 ####################
@@ -3508,7 +3508,7 @@ O....?
 .....?
 ------
 
-:8,OXe
+:8,OXed
 
 
 Pattern EB104
@@ -3589,7 +3589,7 @@ O....?
 o....?
 ------
 
-:8,OXe
+:8,OXed
 
 
 Pattern EB111
@@ -3613,7 +3613,7 @@ Pattern EB112
 |...?
 +----
 
-:8,OXe
+:8,OXed
 
 
 Pattern EB113
@@ -3636,7 +3636,7 @@ O..*.?
 .....?
 ------
 
-:8,OXe
+:8,OXed
 
 
 ###################
Index: regression/nngs3.tst
===================================================================
RCS file: /cvsroot/gnugo/gnugo/regression/nngs3.tst,v
retrieving revision 1.60
diff -u -p -r1.60 nngs3.tst
--- regression/nngs3.tst        28 May 2004 03:09:14 -0000      1.60
+++ regression/nngs3.tst        21 Aug 2004 20:42:35 -0000
@@ -525,7 +525,7 @@ loadsgf games/nngs/gnugo-3.2-merlin-2002
 
 
 loadsgf games/nngs/gnugo-3.3.8-evand-200209122040.sgf 38
-1110 reg_genmove white
+1110 restricted_genmove white B7 A5
 #? [B7]
 
 loadsgf games/nngs/gnugo-3.3.8-evand-200209130704.sgf 160