(;SZ[19]B[qd]GN[Kiseisha vs. Nihon Ki-in]DT[1926-09-07]PC[Yomiuri Press building]PB[Karigane Junichi]BR[7dan]PW[Honinbo Shusai]WR[Meijin]TM[16 hours]RE[W+T]US[tasuki];W[qp]C[ White 2 is called "Shusai's komoku", because it was used by him for important matches.];B[od];W[dc];B[do]
;W[dq];B[cq];W[cr];B[cp];W[er];B[ck];W[op]
(;B[ce]C[ Black could play at "a" instead for Black 13.];W[qj]C[ White 12 forces Black to play at 13, to prevent another shimari, which then gives White the ideal extension of 14.]
(;B[gc]C[ Black 15 would now be played at "a". Karigane commented that Black should have simply extended to "c".];W[ed];B[dg];W[cd];B[de];W[bd]
(;B[qh]C[ Black 21 wouyld be better at "a".]
(;W[kc]C[ If White plays at "a"..];B[ql]C[ Because of the closeness of \\t, Black A is not attractive, so an invasion of White's moyo is better.]
(;W[ph]C[ White 24 is a good move. Normally, White would play at "a".]
(;B[qg]C[ Black 25 at "a" would not be recommended.];W[ok]C[ White 24 and 26 are characteristic moves of Shusai which show his positional judgment and flexibility.];B[om];W[pm];B[pl];W[ol];B[pn];W[nm];B[qm];W[nn];B[rj];W[eo]C[ White does not mind Black connecting his group on the side, since he is trying to make a grand moyo on the lower side.]
;B[en];W[fo];B[fq]C[ Black 39 is a tesuji to force White to play..];W[dp]C[ White 40, which induces..];B[dn]C[ Black to connect at 41.];W[ip];B[jq]C[ Black makes a deep invasion before White can completely secure his territory.];W[iq]
(;B[ir]C[ Black 45 could also be played at "a".];W[jp]
(;B[kr]C[ Black could also live easily with "a"..];W[kq];B[jr];W[lq];B[lr];W[mr];B[hq]
(;W[hp]
(;B[gp]C[ Black could live with 55 at "a"; however, Black was not worried about losing the group. He was using it as bait to try an get a squeeze on the outside.];W[go];B[mq];W[nr];B[fr];W[hr]C[ White decides that he is going to kill the group.];B[gq];W[fs];B[gs]
(;W[ls]C[ White 64 is the opportunity for White to test Black's reaction with "a".];B[hs];W[ks];B[ep];W[br];B[gr];W[js]C[ Now that White has taken the eyes away, Black uses the stones to cut at the weak points on the outside.]
(;B[kp]C[ If Black 71 was played at "a"..];W[lp];B[ko];W[jo];B[nq];W[or];B[ms];W[ns];B[ho];W[hn];B[jn];W[io];B[in]
;W[ho];B[kn];W[ms];B[is];W[mp];B[hm];W[gm];B[fn];W[hl];B[im];W[gn];B[gl];W[fl]
;B[gk];W[fm];B[fk]
(;W[dl]C[ White cannot play at "a". If White had managed to play at 100 for White 64, he would have been a move ahead in the fight.];B[el]C[ Black 1 is very good.];W[em];B[dm];W[ek]
(;B[ej]C[ Black cannot play 5 at "a" or "b".]
(;W[eq]C[ White cannot play at "a".];B[dk];W[fp];B[es];W[dr];B[bq];W[cl];B[el];W[ep]
(;B[bo]C[ Karigane regretted connecting at 15; he said this should be at "a".];W[ek]
(;B[mo]C[ Karigane thought that Black 17 was bad since it loses ko threats. He should have played at "a". However, Kitani and Go Seigen didn't think that 15 and 17 were particularly bad.];W[np];B[el];W[co]C[ White 20 is excellent.];B[bl];W[ek];B[cm];W[el];B[cn];W[bk];B[bj];W[fj]

(;B[ei]C[ Black 29 is somewhat doubtful. It would be better to play at "a".];W[hk];B[gj];W[bm];B[ak];W[bn];B[co];W[ap]C[ White 36 is a smart move and makes the corner yose-ko.]
(;B[jk];W[aq];B[am];W[gi];B[hj];W[ij];B[hi];W[ik];B[hh]C[ Black 45 is a calm move.];W[ih];B[kj];W[hg];B[gh]
;W[ii];B[kh];W[kg]C[ White is trying to build a moyo at the top by attacking Black.];B[lh];W[lk];B[kk];W[lm];B[km];W[gg];B[fh];W[jg]C[ White is close to building another moyo.];B[ds]
;W[cs];B[as]C[ Black is trying to get a ko fight in the corner.];W[ar]
(;B[fe]C[ If Black plays 65 at "a".];W[mf];B[lj];W[pg]
(;B[mg]C[ To make life easier, Black 69 should be at "a".]
(;W[ng]C[ White could play at "a".];B[nf];W[lg];B[mh];W[me];B[ne];W[nc];B[oc];W[nd];B[oe]
(;W[ll]C[ If White 80 is omitted..];B[nh];W[ri];B[qi];W[pj];B[rk];W[pi];B[qf]
(;W[fd]C[ If White had tried to attack the group in the centre with "a"..];B[gd];W[ge];B[he];W[gf]
(;B[if]C[ Black 93 was not necessary. Black 93 at "a" would be better. However Black was in severe time trouble.];W[je];B[jb];W[kb];B[eb];W[db];B[ie];W[ig];B[ic];W[hb]C[ White 102 is very good. This helps him to capture three White stones.];B[gb];W[id]
;B[jd];W[jc];B[ib];W[kd];B[ha];W[ob];B[pb];W[fs]C[ White thought it was time to start the ko, now that the upper side was settled.];B[es];W[ds]
(;B[og]C[ Black 15 would be better at "a", "b" or "c". With each of these movbes, Black may get better ko threats, but he had too little time.]
(;W[rn]C[ Go Seigen commented that this move was rather doubtful because Black then has the large ko threat at A. Playing at "a" would be better.];B[an];W[fs];B[be];W[ee];B[es];W[kl];B[jl];W[fs];B[ff]C[ Black 25 might be the last mistake. This lets White in too far into his territory.];W[fg];B[ef]
;W[bb];B[es];W[eg];B[df];W[fs];B[md];W[hr];B[mc];W[eh];B[fi];W[dh];B[ch];W[hd]
;B[hc];W[jd];B[le];W[lf];B[ld];W[ke];B[rm];W[ro];B[mk]
(;W[on]C[ White cannot omit 50. If he does so..];B[mn];W[nj];B[mj];W[nl]C[Black loses in overtime. If the game had finished normally, Black would have lost by about six points. ])
(;W[tt];B[mn];W[on];B[nl]C[   Black gets another big ko fight.]))
(;W[ro]))
(;B[md])
(;B[lf])
(;B[nl]))
(;B[jb]))
(;W[og];B[kl];W[mi];B[mj];W[ni];B[nj];W[oi];B[ml]
(;W[on];B[nl]C[   Black will get a large ko.])
(;W[nl];B[mn];W[mm];B[no])))
(;W[tt];B[nj];W[oj];B[nl]C[   Black will cut with 2 and 4.]))
(;W[nf];B[mi];W[mc]C[   Karigane said he was afraid that White would play at 1 and 3.]))
(;B[mi];W[mc]C[   Black 1 ensures life, but when White plays at 2, the difference in   territory is too great.]))
(;B[lg];W[fe];B[mc];W[ke]C[   Black 1 is a thick, solid move, but with the sequence to 4, white has more   territory.]))
(;B[aq];W[ar];B[am];W[jk]
(;B[ds];W[cs]C[   This will be ko.])
(;B[bs];W[ds];B[cs];W[fs]C[     White will capture the stones whatever Black's threat.])))
(;B[ak]C[   By taking here, Black could still challenge with a ko in the corner with   A.]))
(;B[np]C[   This will give one or two more threats, which would be valuable.]))
(;B[co];W[bl]
(;B[ek]C[   However, Black could complicate things by playing 3 at "a".];W[bn];B[ar];W[ds];B[bs];W[fs];B[cm];W[hr];B[bm]C[   White would play up to White 10 and would be happy that Black has to play   at 11 and give White sente.])
(;B[bn])))
(;W[cl];B[eq];W[dr];B[dk];W[el];B[bl];W[cm];B[bn]C[   Now White can be caught in geta.]))
(;B[fp];W[el];B[ej];W[cl];B[bl];W[cm]C[   Black has no continuation.])
(;B[eq];W[dr];B[ej];W[dk];B[dj];W[cl];B[bk];W[bn]C[   Since Black has taken his own liberty, he cannot capture White in shicho]))
(;W[el];B[eq];W[dr];B[dl];W[dm];B[ek];W[cl];B[dk];W[cn];B[co];W[em];B[bn]C[   Black would capture the White group.]))
(;B[ds];W[dr];B[es];W[ko];B[bq];W[aq];B[bo];W[cs]C[   The result would be a ko, but White has many threats beginning with A, so   the fight would not be good for Black.]))
(;W[dl]
(;B[cl]C[   If Black plays at 2, this would help White later in the fight. However, if   Black plays at "a"..])
(;B[el]C[     Kitani Minoru and Go Seigen said that this would be Black's best reply.])))
(;B[gq];W[fr];B[gr];W[gs];B[hs];W[fs];B[ep]C[   Black could play at 1 and would live. If White tried to kill him, Black   would cut at 7 and, with the threat of A and the weakness of the corner   group, White would'nt like the fight.]))
(;W[gp];B[fr]C[   White could play at 1 and Black would live with 2. Then White would use   his thickness in the centre, in an entirely different game.]))
(;B[kq];W[hr];B[nr];W[or];B[nq];W[oq];B[js]C[   Bur Black was not happy with only a small life on the lower side, so he   started a fight.]))
(;B[jr]))
(;B[qi];W[pj];B[pi];W[oj];B[oi];W[ol]C[   White would just back off and secure his territory. Because White has the   \\t stone in place, Black can't really expect to make a competing moyo on   the upper side.]))
(;W[pk];B[om]C[   Normally White would play 1 and Black reply at 2.]))
(;W[jc]
(;B[ge];W[mc]C[   This would be a very good development for White.])
(;B[lc];W[hd];B[gd];W[ge]
(;B[he]C[     Black could also play at "a" but cannot simply play at "b".];W[hc];B[fe];W[gf];B[fd];W[if]C[     Black will be happy to connect out.])
(;B[ib];W[kc];B[fe];W[ld];B[mc];W[he];B[fd]C[       Black can also play this way. Black 5 prevents White cutting at 7.])
(;B[fe];W[fd];B[he];W[gf];B[id];W[hc];B[ic];W[hb]C[       Black will lose out in this exchange.]))))
(;B[lc];W[qg];B[mq]C[   The moves to 3 would follow.]))
(;B[gd]C[   The difference is that this stone is light and less subject to an attack.])
(;AB[gc][de][dg]AW[ed][cd][bd][kc]C[   Black \\t will force White to descend at 1 to secure his group, but when   White gets to move \\t, Black would prefer to have the Black stone at A.])
(;B[lc]))
(;B[qj];W[ce];B[jc]))