Re: [gnugo-devel] make --experimental-break-in default

[Gunnar Farneback]

Arend wrote:
> At this point, this should get it more testing. (It should also be stable
> enough not to hinder other testing.)

Appended is a test case where the break in code goes wrong. Instead of
filling the ko in the upper left (last point on the board) it plays
inside its own solid territory.

After a little debugging I believe the core of the problem is here:

loadsgf games/gunnar/gunnar11.sgf
break_in C14 K13 J12 K12 H11 J11 H10
= 3 J11

/Gunnar

Index: regression/gunnar.tst
===================================================================
RCS file: /cvsroot/gnugo/gnugo/regression/gunnar.tst,v
retrieving revision 1.21
diff -u -r1.21 gunnar.tst
--- regression/gunnar.tst       3 Jun 2003 12:56:21 -0000       1.21
+++ regression/gunnar.tst       11 Jun 2003 14:04:22 -0000
@@ -193,6 +193,12 @@
 35 gg_genmove white
 #? [C7|D7|E7]*
 
+# The break-in code of GNU Go 3.3.21 wants to play J12, H11, or K13.
+# Clearly filling ko at B18 is the only worthwhile move here.
+loadsgf games/gunnar/gunnar11.sgf
+36 gg_genmove white
+#? [B18]*
+
 
 ############ End of Tests #################
 
Index: regression/games/gunnar/gunnar11.sgf
===================================================================
RCS file: regression/games/gunnar/gunnar11.sgf
diff -N regression/games/gunnar/gunnar11.sgf
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ regression/games/gunnar/gunnar11.sgf        11 Jun 2003 14:04:22 -0000
@@ -0,0 +1,19 @@
+(;GM[1]
+SZ[19]
+KM[5.5]
+;AW[aa][ba][ca][da][ea][fa][ga][na][oa][ab][cb][eb][hb][nb][bc]
+[fc][gc][hc][ic][jc][nc][dd][ed][fd][hd][jd][nd][od][pd][ke][me]
+[ne][pe][ff][gf][if][jf][kf][lf][nf][pf][dg][eg][gg][hg][kg][ch]
+[eh][gh][lh][ai][bi][ci][ei][fi][ji][ki][li][mi][cj][ej][jj][mj]
+[ck][ek][jk][kl][jm][lm][dn][fn][gn][in][kn][ln][on][qn][eo][fo]
+[ho][io][jo][po][ro][dp][jp][kp][lp][mp][np][pp][qp][rp][sp][cq]
+[dq][jq][oq][pq][br][cr][pr][qr][bs][qs][rs]
+AB[pa][db][ob][ac][cc][dc][ec][oc][pc][qc][ad][bd][cd][id][kd]
+[ld][qd][de][ee][fe][ge][he][ie][je][le][qe][bf][cf][df][ef][hf]
+[mf][of][qf][cg][ig][mg][ng][og][pg][ah][bh][dh][hh][mh][di][gi]
+[ni][dj][fj][kj][lj][nj][kk][lk][mk][ll][nl][mm][pm][qm][rm][mn]
+[pn][rn][go][ko][lo][mo][no][oo][so][ep][fp][gp][hp][op][eq][fq]
+[hq][iq][kq][lq][mq][nq][rq][sq][dr][fr][ir][jr][lr][mr][nr][or]
+[rr][sr][cs][ds][gs][hs][js][ns][os][ps][ss]
+PL[W]
+)