[gnugo-devel] tuning

[Paul Pogonyshev]

Just two patterns.  Regression results are untested, but both
patterns seem perfectly logical and long missed from GNU Go.

Paul


Index: patterns/patterns.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns.db,v
retrieving revision 1.126
diff -u -p -r1.126 patterns.db
--- patterns/patterns.db        25 May 2004 03:14:06 -0000      1.126
+++ patterns/patterns.db        30 May 2004 20:14:08 -0000
@@ -11023,6 +11023,26 @@ A...c
 ;x_alive_somewhere(b,c) && weak(A)
 
 
+Pattern ED99a
+# pp New pattern (3.5.8)
+
+|..X.?     stabilize the corner in double sente
+|..XO.
+|.XO.O
+|.*...
++-----
+
+:8,OXd,reverse_followup(3)
+
+|..X.?
+|..XA.
+|.XO.O
+|.*...
++-----
+
+; weak(A)
+
+
 #####################################################################
 #
 # Center defend/attack patterns
Index: patterns/patterns2.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns2.db,v
retrieving revision 1.72
diff -u -p -r1.72 patterns2.db
--- patterns/patterns2.db       25 May 2004 03:14:06 -0000      1.72
+++ patterns/patterns2.db       30 May 2004 20:14:12 -0000
@@ -3246,6 +3246,24 @@ a*B
 >prevent_attack_threat(c);
 
 
+Pattern Sente24
+# pp New pattern (3.5.8)
+
+?*o
+XO.
+?O.
+---
+
+:8,OX,reverse_followup(8)
+
+?*o
+XAb
+?A.
+---
+
+; lib(A)==3 && safe_xmove(*) && !xplay_defend(*,?,b,A)
+
+
 ########################################################
 #
 # Double threat moves and defense against double threats