[gnugo-devel] A fuseki test case

[SP LEE]

The following test case is from a recent game on nngs.

  A B C D E F G H J K L M N O P Q R S T
19 . . . . . . . . . . . . . . . . . . . 19
18 . . . . . . . . . . . . . . . . . . . 18
17 . . . O . . . . . O . . . O X . . . . 17
16 . . . + . . . . . + . . . O . X . . . 16
15 . . O . . . . . . . . . . . . . . . . 15
14 . . . . . . . . . . . . . . . . X . . 14
13 . . X . . . . . . . . . . . . . . . . 13
12 . . . . . . . . . . . . . . . . . . . 12
11 . . . . . . . . . . . . . . . . . . . 11
10 . . . X . . . . . + . . . . . + . . . 10
9 . . . . . . . . . . . . . . . . . . . 9
8 . . . . . . . . . . . . . . . . . . . 8
7 . . . . . . . . . . . . . . O . . . . 7
6 . . . . . . . . . . . X X X X O O . . 6
5 . . X . . . . . . . . . O O O X O . . 5
4 . . O + . O . . . + . . . . . X X . . 4
3 . . . O . . . X . . . . X . . X . . . 3
2 . . . . . . . . . . . . . . . . . . . 2
1 . . . . . . . . . . . . . . . . . . . 1
  A B C D E F G H J K L M N O P Q R S T

Gnugo played at D5, which let black answer at C6, not only live but also 
have chance to build territory on left side. To generalize the problem, it's 
important not to play near a light opponent tone and pincer is usually a 
good choice. In the above situation, the black stone at C5 was classified as 
alive. After adding a white stone at C7, C5 was seen dead by gnugo. Of 
course, it might live but white is in a easy position to chase it. It seems 
to me that it's hard to add a pattern to solve the problem. We might add 
another dragon status, light, to use special patterns to treat them 
separately.

SP Lee

Index: nngs4.tst
===================================================================
RCS file: /cvsroot/gnugo/gnugo/regression/nngs4.tst,v
retrieving revision 1.45
diff -u -r1.45 nngs4.tst
--- nngs4.tst   12 Aug 2003 03:02:56 -0000      1.45
+++ nngs4.tst   25 Aug 2003 03:30:01 -0000
@@ -314,6 +314,14 @@
740 reg_genmove black
#? [D2]*

+#Gnugo 3.4 played at D5, then black happily answered at C6
+#C7 simply restricted the move of C5 and prevent black to
+#build territory on left side.
+
+loadsgf games/nngs/gnugo-3.4-nailer-200308230714.sgf 32
+750 reg_genmove white
+#? [C7]
+

############ End of Tests #################

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