[gnugo-devel] Owl cutting dragon in half failures

[Trevor Morris]

I'm not sure how to correct this problem, but it seems quite 
serious.

In owl:111, the following sequence is declared as 2 or more secure
eyes, though the eyes have been clearly split into 2 separate
dragons in the course of the fight:

W:F14 B:M16 W:F13 B:A13 W:C16 B:C15

Also, here's a new regression test to add, with a simplified case
of the same problem:

(call this trevor_1_16.6)

Index: trevor.tst
===================================================================
RCS file: /cvsroot/gnugo/gnugo/regression/trevor.tst,v
retrieving revision 1.28
diff -u -B -b -r1.28 trevor.tst
--- trevor.tst  2001/11/30 14:42:02     1.28
+++ trevor.tst  2001/12/07 16:23:34
@@ -527,6 +527,14 @@
 600 owl_attack E3
 #? [1 E2]*

+
+#CATEGORY=OWL
+#DESCRIPTION=OWL code misreads cut.
+#SEVERITY=10
+loadsgf games/trevor/trevor_63.sgf
+630 owl_attack G13
+#? [1 H13]*
+
 #CATEGORY=OWL_EYES
 #DESCRIPTION=Fixed by eye pattern 402
 #SEVERITY=10



New file: games/trevor/trevor_63.sgf
(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.18]
AB[dr][er][fr][fs][hr][ir][jr][js][hs][gh][gi][hi][ih][ig][gg][jg][kg][kh][ki][ji][fi][ei][fg][eg]
AW[cr][cq][dq][eq][fq][gq][gr][hq][iq][jq][kq][kr][ii][gf][hf][if][jf][kf][ij][jj][kj][lj][mj][lf][mf][mg][mh][mi][hj][gj][fj][ej][dj][di][dh][ch][cg][cf][ce][de][ee][fe][ge]
)