Re: [gnugo-devel] new testcase

[bump]

> This looks like a very interesting problem, and I'm not really sure of the
> correct answer.  However, it looks like gnugo made a mistake somewhere.
> 
> loadsgf games/nngs/evand-gnugo-3.3.9-200210080559.sgf 124
> gg_genmove black
> #? [1 S14]
> 
> Thanks

What happens if B plays S14 is hard to say. Here's one variation,
showing B trying to kill the corner and losing the semeai. But
the position is complex. There might be a way to get more liberties
and win but W has a *lot* of liberties.

On the other hand, if B just plays Q14, capturing one stone in a
ladder, W makes life and B gets sente. This seems just fine, especially
since B already killed a group on the left side.

Dan

(;GM[1]FF[3]
SZ[19]HA[2]KM[0.5]
PW[evand]
WR[13k*]
PB[GnuGo (GNU Go 3.3.9)]
BR[11k*]PC[NNGS]
DT[2002-10-08]
AP[gnugoclient:2.0]
RE[B+40.5]
AB[pd][dp];W[qp];B[dd];W[nq];B[qh];W[jd];B[lc];W[fc];B[df];W[db];B[cc]
;W[jb];B[cj];W[cn];B[fq];W[bp];B[cq];W[bk];B[qk];W[jq];B[bq];W[co];
B[qn];W[ff];B[oh];W[me];B[dh];W[fh];B[cb];W[ec];B[mh];W[lg];B[ki];
W[nn];B[nd];W[nf];B[pf];W[qc];B[qd];W[pc];B[ii];W[ig];B[mj];W[rd];
B[re];W[rc];B[lm];W[kn];B[nm];W[on];B[hr];W[ir];B[bj];W[ck];B[om];
W[pn];B[pm];W[hq];B[ak];W[al];B[aj];W[bl];B[fo];W[dj];B[dk];W[ei];
B[dl];W[cl];B[dm];W[cm];B[ap];W[bo];B[en];W[an];B[bm];W[di];B[bh];
W[ci];B[bi];W[ch];B[cg];W[qo];B[rn];W[hn];B[ob];W[pb];B[oc];W[oa];
B[ik];W[fj];B[ln];W[lo];B[ko];W[jo];B[kp];W[lp];B[kq];W[mn];B[gr];
W[jp];B[jn];W[km];B[kr];W[jm];B[ll];W[mm];B[kl];W[jl];B[jk];W[in];
B[ml];W[oe];B[ne];W[of];B[od];W[mg];B[sd];W[rb];B[qa];W[pa];B[sc];
W[sb];B[ra];W[qe]
(;B[pe];W[se];B[rf];W[sd];B[ro];W[rp];B[sp];W[sq];B[so];W[rr];B[da];
W[ea];B[ca];W[md];B[mc];W[lh];B[ng];W[li];B[mi];W[kj];B[ji];W[lj];
B[kk];W[kc];B[og];W[mf];B[ld];W[le];B[jg];W[jf];B[ih];W[hg];B[sf];
W[kg];B[gm];W[hl];B[hk];W[gl];B[eg];W[fg];B[gn];W[go];B[gp];W[ho];
B[fl];W[gk];B[gi];W[fi];B[ek];W[fk];B[lb];W[hm];B[fm];W[jh];B[na];
W[kb];B[dc];W[ed];B[eb];W[fb];B[ee];W[fe];B[fa];W[ga];B[ea];W[hb];
B[ef];W[eh];B[dg];W[ce];B[bf];W[dn];B[gq];W[hp];B[kh];W[jg];B[kd];
W[ke];B[ka];W[ja];B[la];W[lk];B[mk];W[hj];B[hi];W[ij];B[jj];W[gj];
B[hs];W[is];B[gh];W[gg];B[il];W[im];B[ej];W[ao];B[aq];W[do];B[mr];
W[nr];B[ks];W[ms];B[lr];W[mq];B[hh];W[tt];B[tt]
C[final_score: B+40.5
R19 removed
C15 removed
R15 removed
B9 removed
L5 removed])
(;B[rf];W[se]
(;B[sd];W[pe];B[nb];W[lb];B[na];W[md];B[mc];W[mb];B[kc];W[kb];B[sa];
W[qb];B[ra];W[ma];B[nc];W[jc])
(;B[pe];W[sd]C[
])
)

)