[gnugo-devel] Joseki additions

[Evan Berggren Daniel]

I've started to add to GNU Go's joseki database, as I mentioned on nngs.
My hope is to make GNU Go a more interesting opponent by changing the game
openings some, and perhaps also find different sets of problems that
result later in the game.

Also, perhaps it will do better against players who don't know the
josekis, though this is not my primary intent.

Attached is a fairly large patch to komoku.sgf.  I do not believe it is
ready for cvs as yet.  In many cases gnugo responds reasonably to
non-joseki moves, but this needs to be tested further first, and more
variations added as needed.

Also, the compiler warns that the .stabs debugging field is too big.  I'm
not entirely sure of the correct solution to this.

However, I think it might be interesting to try this on nngs and see what
happens.

I would be happy to take on a project of generally improving GNU Go's
joseki database, and answers to non-joseki moves, assuming there are no
objections.  So, comments about the patch and places it needs work are
quite welcome.

Thanks

Evan Daniel


Index: komoku.sgf
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/komoku.sgf,v
retrieving revision 1.6
diff -u -r1.6 komoku.sgf
--- komoku.sgf  31 Mar 2002 20:46:47 -0000      1.6
+++ komoku.sgf  24 Oct 2002 05:21:23 -0000
@@ -19,68 +19,133 @@


 (;GM[1]FF[3]
-RU[Japanese]SZ[19]HA[0]KM[5.5]
-PW[White]
-PB[Black]
+SZ[19]AP[SGFC:1.13b]
 GN[White (W) vs. Black (B)]
+PB[Black]
+HA[0]
+PW[White]
+KM[5.5]
 DT[1999-05-27]
-SY[Cgoban 1.9.2]TM[5:00:00(5x1:00)];B[qd]
-(;W[od]PL[B]
+TM[5:00:00(5x1:00)]RU[Japanese]SY[Cgoban 1.9.2];B[qd]
+(;W[od]
 (;B[oc]MA[mg]
-(;W[nc]MA[lg]C[U
-];B[pc]MA[mf]C[U
+(;W[nc]MA[lg]C[U];B[pc]MA[mf]C[U]
+(;W[nd]MA[lg]C[:-,shape(6)]
+(;B[qf]MA[mh]C[U];W[jc]MA[if]C[U];B[hc]MA[gg]C[t
 ]
-(;W[nd]MA[lg]C[:-,shape(6)
-]PL[B]
-(;B[qf]MA[mh]C[U
-];W[jc]C[U
-]MA[if])
-
-(;B[tt]C[
-];W[qe]C[s
-]MA[li];B[re]MA[li];W[pd]MA[li];B[rc]MA[li];W[qf]
+(;W[je]C[U
+])
+
+(;W[tt];B[lc]
+(;W[ld]C[0
+#an obvious, but wrong, move
+];B[lb])
+
+(;W[lb])
+)
+)
+
+(;B[tt];W[qe]MA[li]C[s];B[re]MA[li];W[pd]MA[li];B[rc]MA[li];W[qf]
 MA[li];B[rf]MA[li];W[qg]MA[li])
+
+(;B[kd]MA[if];W[qe]MA[ig];B[re]MA[ig];W[pd]MA[ig];B[rc]MA[ig];
+C[:-,shape(6)];W[qf]MA[ii];B[rf]MA[ii]
+(;W[qh]MA[ij])
+
+(;W[qg]MA[ii])
+)
+
+(;B[pe]MA[lg];W[jc]MA[if];B[qj]MA[ik];W[tt];B[nf]C[t
+]MA[ik])
 )

-(;W[md]MA[jg]C[:-, shape(6)
-];B[qf]MA[mh];W[ic]MA[hf])
+(;W[md]MA[jg]C[:-, shape(6)]
+(;B[qf]MA[mh];W[ic]MA[hf])
+
+(;B[ne]MA[lg]
+(;W[oe]MA[lg];B[nb]MA[lg]
+(;W[nf]MA[lg]C[:-,shape(6)
+];B[mb]MA[lg];W[qe]MA[lg];B[re]MA[lg];W[qg]
+MA[lg])
+
+(;W[mb]MA[lg]C[0
+#gnugo likes this move, which is bad.];B[nd]MA[lg];
+W[mc]MA[lg];B[of]MA[lg])
 )

-(;W[pd]MA[mh]C[0
-# We currently avoid the avalanche joseki
-];B[pc]
-MA[nf]C[U
-];W[qe]MA[ng]C[U
-];B[qc]MA[ng];W[nd]MA[mg]C[U
-];B[mc]MA[lg];
-W[pf]MA[lg]C[:-,shape(6)
+(;W[nd]MA[lg];B[pe]MA[lg];W[ic]MA[hg];B[qj]MA[hk]C[t
+:-,shape(8)
 ])
 )

+(;B[pe]C[0
+#bad idea without the peep first
+]MA[kg];W[ic]MA[hg];B[ne]
+MA[hg];W[me]C[:-,shape(8)
+]MA[hg])
+)
+)
+
+(;W[pd]MA[mh];B[pc]MA[nf]C[U];W[qe]MA[ng]C[U]
+(;B[qc]MA[ng];W[nd]MA[mg]C[U]
+(;B[mc]MA[lg];W[pf]MA[lg]C[:-,shape(6)])
+
+(;B[re]MA[lh];W[qf]MA[lh];B[rf]MA[lh];W[qg]MA[li];B[mc]MA[ki];W[le]
+MA[ji]C[U];B[lc]MA[ji]C[U])
+)
+
+(;B[nd]MA[ki]
+LB[qc:A][rd:B][qb:C][re:D][qf:E][rf:F][nc:G][oe:H][pe:I][qg:J][pf:K][of:L][pg:M]
+C[; xplay_attack(A,B,C,D,E,F,G,H,I,J,K,L,M,M)
+];W[qc]MA[ki]C[U];B[rd]
+MA[ki];W[qb]MA[ki];B[re]MA[ki];W[pf]MA[ki]C[U]
+(;B[qf]MA[ki]C[U];W[nc]MA[ki]C[U];B[pe]MA[ki];W[oe]MA[ki];B[of]MA[ki];
+W[ne]MA[ki];B[pg]MA[ki];W[md]MA[ki])
+
+(;B[pb]MA[mg]C[0
+#this is bad, and gnugo will try it.])
+)
+
+(;B[nc]MA[kg]
+C[0
+#we don't start the large avalanche.  It probably has complications to
+check.]
+;W[nd]MA[kg];B[md]MA[kg];W[qc]MA[kg];B[rd]MA[kg];W[qb]MA[kg];B[rc]
+MA[kg];W[mc]MA[jg];B[lc]MA[ji];W[rb]MA[ji]C[U];B[re]MA[ji];W[mb]MA[ji]
+;B[nb]MA[ii];W[lb]MA[ii];B[pb]MA[ih];W[kc]MA[ii];B[me]MA[ii];W[of]
+MA[ii]C[U];B[qf]MA[ii];W[nf]MA[ii]C[U];B[ke]MA[ii];W[hc]MA[fi];B[lg]
+MA[fi];W[oi]MA[fk];B[qi]MA[fk])
+
+(;B[re]MA[mg];W[rd]MA[mg]C[U];B[qc]MA[mg]C[U];W[rf]MA[mg]C[U];B[nd]
+MA[lg]C[:-,shape(6)];W[pf]MA[lg]C[:-,shape(6)])
+
+(;B[rd]MA[mg]C[0
+#not very good for b.])
+)
+)
+
 (;B[pf]MA[lh]
-(;W[qc]MA[lh]C[:-,shape(3)
-];B[rc]MA[lh];W[pc]MA[lh]C[U
-];B[re]MA[lh]
-C[:-,shape(8)
-]
-(;W[kc]MA[jg]C[:-,shape(10)
-])
+(;W[qc]MA[lh]C[:-,shape(3)];B[rc]MA[lh];W[pc]MA[lh]C[U]
+(;B[re]MA[lh]C[:-,shape(8)]
+(;W[kc]MA[jg]C[:-,shape(10)])

-(;W[lc]MA[kh]C[:-,shape(10)
-])
+(;W[lc]MA[kh]C[:-,shape(10)])
 )

-(;W[lc]MA[lh]C[0
-])
+(;B[rb]MA[kg]
+(;W[kc]MA[jg]C[:-,shape(10)];B[qj]MA[jk]C[:-,shape(10)])

-(;W[nf]MA[lh]C[0
-])
+(;W[lc]MA[kh]C[:-,shape(10)];B[qj]MA[jk]C[:-,shape(10)])
+)
+)
+
+(;W[lc]MA[lh]C[0])
+
+(;W[nf]MA[lh]C[0])
 )

-(;B[oe];W[ne]MA[lg]
-(;B[pe]MA[lg];W[md]MA[kg]C[U
-];B[oc]MA[kg]C[j
-];W[nc]MA[kg])
+(;B[oe]MA[lg];W[ne]MA[lg]
+(;B[pe]MA[lg];W[md]MA[kg]C[U];B[oc]MA[kg]C[j];W[nc]MA[kg])

 (;B[of];W[md]MA[kg]
 (;B[oc];W[pd])
@@ -88,13 +153,9 @@
 (;B[pd]MA[lg];W[oc]MA[kg])
 )

-(;B[nd];W[pe]MA[mg]C[U
-];B[of];W[pd]MA[lh]C[U
-]
-(;B[me];W[nc]C[U
-]MA[kh]
-(;B[nf];W[mc]MA[kh]C[U
-])
+(;B[nd];W[pe]MA[mg]C[U];B[of];W[pd]MA[lh]C[U]
+(;B[me];W[nc]MA[kh]C[U]
+(;B[nf];W[mc]MA[kh]C[U])

 (;B[md];W[pf]MA[li])
 )
@@ -107,19 +168,12 @@
 (;W[of]MA[ki]C[U];B[qf]MA[ki]C[S];W[oh]MA[ki]C[S];B[qh]MA[ki]C[S];
 W[id]MA[ii]C[S])

-(;W[pg]MA[ki]C[U
-];B[oe]MA[ki]C[U
-];W[ne]MA[ki]C[U
-];B[of]MA[ki]C[U
-];
-W[pd]MA[ki]C[U
-]
-(;B[pe]MA[ki]C[U
-];W[qc]MA[ki];B[qe]MA[ki];W[nc]MA[ki];B[rc]MA[ki];
+(;W[pg]MA[ki]C[U];B[oe]MA[ki]C[U];W[ne]MA[ki]C[U];B[of]MA[ki]C[U];
+W[pd]MA[ki]C[U]
+(;B[pe]MA[ki]C[U];W[qc]MA[ki];B[qe]MA[ki];W[nc]MA[ki];B[rc]MA[ki];
 W[qb]MA[ki])

-(;B[qf]MA[ki]C[U
-]
+(;B[qf]MA[ki]C[U]
 (;W[qc]MA[ki];B[qe]MA[ki];W[nc]MA[ki];B[rc]MA[ki];W[qb]MA[ki]
 (;B[qj]MA[kk])

@@ -128,9 +182,7 @@
 (;B[ql]MA[km])
 )

-(;W[nf]MA[ki];B[og]MA[ki]C[U
-];W[qc]MA[ki];B[qe]MA[ki]C[U
-]
+(;W[nf]MA[ki];B[og]MA[ki]C[U];W[qc]MA[ki];B[qe]MA[ki]C[U]
 (;W[pb]MA[ki]
 (;B[ql]MA[km])

@@ -138,13 +190,11 @@
 )

 (;W[rc]MA[ki]C[0
-# Requires a ladder.
-];B[pi]MA[kj];W[nc]MA[kj])
+# Requires a ladder.];B[pi]MA[kj];W[nc]MA[kj])
 )

 (;W[pe]MA[ki]C[0
-# Bad
-];B[pf]MA[ki];W[qe]MA[ki];B[nd]MA[ki];W[rf]
+# Bad];B[pf]MA[ki];W[qe]MA[ki];B[nd]MA[ki];W[rf]
 MA[ki];B[rg]MA[ki];W[re]MA[ki];B[qg]MA[ki];W[nc]MA[ki];B[md]MA[ki])
 )
 )
@@ -152,71 +202,39 @@
 )

 (;W[oc]
-(;B[pe]MA[mi]PL[B]
-(;W[md]C[
-]MA[kg];B[pc]MA[jh]C[U
-];W[od]MA[kh]C[:-,shape(5)
-])
+(;B[pe]MA[mi]
+(;W[md]MA[kg];B[pc]MA[jh]C[U];W[od]MA[kh]C[:-,shape(5)])

 (;W[lc]MA[jf];B[jc];W[qb]MA[if])

 (;B[nd]MA[mg]
-(;W[mc]MA[kh]C[U
-];B[pc]MA[kh];W[nc];B[qj]MA[ll]C[:-,value(28)
-])
+(;W[mc]MA[kh]C[U];B[pc]MA[kh];W[nc];B[qj]MA[ll]C[:-,value(28)])

-(;W[nc];B[md]MA[lh];W[lc]MA[kh];B[qj]MA[kk]C[:-,value(28)
-])
+(;W[nc];B[md]MA[lh];W[lc]MA[kh];B[qj]MA[kk]C[:-,value(28)])
 )
 )

-(;B[ld]MA[ig]C[
-]
-(;W[of]C[:-,shape(5)
-]MA[ki]
+(;B[ld]MA[ig]
+(;W[of]MA[ki]C[:-,shape(5)]
 (;B[qg]MA[ki])

-(;B[oe]MA[jh];W[ne]C[U
-]MA[ki];B[pe]C[U
-]MA[kg];W[nd]C[U
-]MA[kh];B[nf]
-C[U
-]MA[kh];W[mf]C[U
-]MA[ki];B[ng]C[U
-]MA[ji];W[le]C[U
-]MA[ji]
-(;B[og]MA[ji]C[:-,shape(8)
-];W[kd]MA[ji]C[U
-])
+(;B[oe]MA[jh];W[ne]MA[ki]C[U];B[pe]MA[kg]C[U];W[nd]MA[kh]C[U];B[nf]
+MA[kh]C[U];W[mf]MA[ki]C[U];B[ng]MA[ji]C[U];W[le]MA[ji]C[U]
+(;B[og]MA[ji]C[:-,shape(8)];W[kd]MA[ji]C[U])

-(;B[jd]MA[hi]C[:-,shape(8)
-];W[qf]C[U
-]MA[ii];B[pf]C[U
-]MA[ji];W[og]
-C[U
-]MA[ii];B[pg]C[U
-]MA[ii];W[oh]C[U
-]MA[ij];B[qi]C[U
-]MA[ik];W[mh]
-C[U
-])
+(;B[jd]MA[hi]C[:-,shape(8)];W[qf]MA[ii]C[U];B[pf]MA[ji]C[U];W[og]
+MA[ii]C[U];B[pg]MA[ii]C[U];W[oh]MA[ij]C[U];B[qi]MA[ik]C[U];W[mh]C[U])
 )
 )

-(;W[nd]C[:-,shape(5)
-]MA[jg];B[pf]C[:-,shape(5)
-]MA[ki];W[qb]C[U
-]
-MA[ki];B[qj]C[:-,shape(5)
-]MA[kl])
+(;W[nd]MA[jg]C[:-,shape(5)];B[pf]MA[ki]C[:-,shape(5)];W[qb]MA[ki]C[U];
+B[qj]MA[kl]C[:-,shape(5)])
 )

-(;B[kc]MA[ig]C[:-,shape(8)
-])
+(;B[kc]MA[ig]C[:-,shape(8)])

-(;B[mc]MA[kf]LB[kc:A]C[;!xarea(A)
-];W[oe]MA[lg];B[pf]MA[lh];W[md]
-MA[kh];B[ld];W[me]MA[kh];B[nc];W[od]MA[kg])
+(;B[mc]MA[kf]LB[kc:A]C[;!xarea(A)];W[oe]MA[lg];B[pf]MA[lh];W[md]MA[kh]
+;B[ld];W[me]MA[kh];B[nc];W[od]MA[kg])
 )

 )