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(;GM[1]FF[3]
VieW[]
SO[]
EV[]
PC[]
DT[May 16-18, 1842]
RE[]
TM[]KM[0]BR[]WR[]
PB[Shuwa]
PW[Genan]
SZ[19]
PL[1];B[qd];W[oc];B[ec];W[pf];B[od];W[nd];B[oe];W[pc];
B[qe];W[qc];B[qi];W[de];B[cd];W[ce];B[bd];W[mf];B[of];W[gc];B[fc];
W[gd];B[ee];W[do];B[cj];W[di];B[ci];W[dh];B[cm];W[fe];B[ef];W[ff];
B[eg];W[fg];B[eh];W[fh];B[ei];W[dj];B[dk];W[ej];B[fi];W[dl];B[ek];
W[fj];B[gi];W[dd];B[dc];W[ck];B[el];W[bk];B[ch];W[cg];B[dg];W[fl];
B[fk];W[gj];B[bg];W[cf];B[ed];W[dm];B[em];W[dn];B[gl];W[hj];B[hi];
W[ij];B[il];W[jf];B[jh];W[kj];B[gn];W[oi];B[hg];W[qj];B[rj];W[qh];
B[pj];W[pi];B[qk];W[ri];B[ie];W[if];B[hf];W[jd];B[hd];W[hc];B[me];
W[lf];B[ne];W[md];B[le];W[kd];B[kf];W[kg];B[ke];W[je];B[jg];W[kh];
B[rc];W[rb];B[rh];W[qj];B[ld];W[lc];B[qi];W[bh];B[bi];W[qj];B[mc];
W[nc];B[qi];W[bf];B[ah];W[qj];B[kc];W[mb];B[qi];W[af];B[cl];W[bm];
B[ki];W[qj];B[lb];W[mc];B[qi];
C[Now the situation becomes complicated beyond the
point of mortal understanding, since in addition to the ko
on the right, White is trying to revive his dead stones on
the left. If they live, White does not need to worry about
eyes in the center.]
W[ag];B[lj];W[qj];B[ic];W[jc];B[qi];W[li];B[ji];W[qj];B[ib];W[id];
B[qi];W[mj];B[lk];W[qj];B[he];W[jb];B[qi];W[mh];B[si];W[oj];B[ok];
W[mk];B[pq];W[jj];B[ll];W[ol];B[eq];W[cq];B[mp];W[bh];B[gp];W[nk];
B[mn];W[gq];B[fq];W[hp];B[hq];W[mq];B[nq];W[lp];
C[As is traditional, the captured stone is removed from the board.]
B[gr];W[nr];B[np];W[kq];B[or];W[lr];B[jr];W[ln];B[lm];W[jq];B[pk];
W[nm];B[lo];W[ko];B[kn];W[jo];B[ns];W[mr];B[pm];W[on];B[pn];W[bc];
B[cc];C[At long last, White takes the chance to eliminate the ko
aji.]
W[ai];B[ir];W[kr];B[cr];W[ad];B[bb];W[br];B[dr];W[ab];B[ac];W[oo];
B[pl];W[bc];B[ca];W[qg];B[og];W[ph];B[rg];W[fb];B[ac];W[op];B[oq];
W[bc];B[eb];W[nn];B[gb];W[hb];B[fa];W[rd];B[re];W[sc];B[cp];W[bp];
B[dp];W[co];B[ip];W[jp];B[in];W[fo];B[fn];W[eo];B[ho];W[ac];B[kk];
W[qf];B[rf];W[jn];B[jm];W[ps];B[os];W[qo];B[po];W[qq];B[pp];W[qr];
B[rn];W[ro];
C[White is dead in the corner. It is unknown whether
Genan knew the invasion was doomed, or whether he
made a misreading. According to one theory, Genan
knew that he was slightly behind and invaded hoping
for a Black mistake. Of course, the failed invasion
made Black's lead larger, and after a few more moves,
Black won by 6 points.
]
B[so]PL[2]
(;W[cs];B[ds];W[bs];B[se];W[jk];B[jl];W[gk];B[hk];W[en];B[fm];W[no];
B[mo];W[js];B[is];W[ks];B[sd];W[rc];B[ms];W[ba];B[aa];W[sp];B[qp];
W[ba];B[cb];W[ae])
(;W[sp];B[qp];W[rp];B[sr];W[rr];B[sq];W[ss]PL[2];B[qs])
)
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