1001 GoGoD games for your Coffee Break #27 (12 February 2013

[TMark]

Another Go Seigen game for you today. When I was recording his games there were always some moves that were astonishing, to me as an amateur. Look at move 11 in this game before you go any further and ask yourself, what does this move mean to the bottom left corner? Yes, the bottom left corner.

The thing is in pro games that there are always moves like that, which probe the opponent’s intentions but also protect against future threats. It is just in this game Miyashita played the variation which could have led to the ladder and we can see how far Go had read to prepare for it.

Best wishes.

(;SZ[19]FF[3]
PW[Miyashita Shuyo]
WR[8d]
PB[Go Seigen]
BR[9d]
EV[Three-game match in "Go versus New 8-dan Stars" series sponsored by Yomiuri Shinbun]
RO[Game 2]
DT[1955-09-20~10-03]
PC[Tsurumaki Spa, Kanagawa Pref.]
TM[10h]
KM[0]
OH[B-{W}-B]
RE[B+R]
US[GoGoD95]
;B[qd];W[dc];B[pq];W[co];B[oc];W[qn];B[qp];W[qk];B[dq];W[fp];B[pk];W[qj]
;B[do];W[dp];B[ep];W[cp];B[eq];W[eo];B[dn];W[cq];B[fq];W[gp];B[en];W[fo]
;B[gq];W[hp];B[hq];W[iq];B[ip];W[jq];B[fn];W[gn];B[gm];W[hn];B[jp];W[kp]
;B[jn];W[hm];B[kq];W[kr];B[lq];W[lr];B[mq];W[hr];B[gr];W[mr];B[nr];W[is]
;B[cr];W[br];B[dr];W[nq];B[np];W[mp];B[oq];W[jm];B[cn];W[bn];B[bm];W[bo]
;B[ko];W[lp];B[nq];W[jr];B[cl];W[bs];B[gs];W[ln];B[lo];W[mo];B[mn];W[no]
;B[km];W[lm];B[im];W[jl];B[in];W[hl];B[oo];W[nn];B[on];W[nm];B[kl];W[kn]
;B[il];W[io];B[jk];W[jo];B[es];W[cj];B[dj];W[ci];B[df];W[dk];B[ek];W[ej]
;B[di];W[ck];B[dh];W[el];B[fk];W[fl];B[gk];W[gl];B[hk];W[cg];B[dg];W[ch]
;B[fc];W[ce];B[qh];W[jc];B[lc];W[hc];B[cf];W[bf];B[cd];W[de];B[dd];W[ee]
;B[bd];W[be];B[ed];W[fb];B[gb];W[gc];B[eb];W[fd];B[fa];W[ec];B[fb];W[fi]
;B[fe];W[gd];B[fg];W[gh];B[gg];W[ij];B[ih];W[hi];B[ge];W[jj];B[kj];W[ki]
;B[lj];W[ik];B[ji];W[he];B[hb];W[id];B[hh];W[ii];B[jh];W[ad];B[cc];W[fh]
;B[hf];W[ld];B[md];W[kc];B[le];W[kd];B[mc];W[je];B[ib];W[bc];B[cb];W[if]
;B[ic];W[hd];B[ef];W[kh];B[fj];W[jg];B[hg];W[ei];B[eh];W[gi];B[pl];W[ql]
;B[ri];W[pj];B[oi];W[oj];B[lg];W[kg];B[mi];W[ph];B[pg];W[oh];B[ng];W[lf]
;B[mf];W[ro];B[rp]
)

[SmoothOper]

It seems I see the 3-5 in conjunction with the shimari fuseki by black fairly often. Was the 3-5 a way to overcome the absence of komi by instigating intricate fights?

[SoDesuNe]

It fascinates me, how to assess if this ( ) forcing move has the same or maybe even a bigger value than the corner, giving White will play another move there.

[logan]

Here's another game with a similar ladder breaking move. The Go Seigen game reminded me of this. If you can please turn your eyes to move 41.

http://www.lifein19x19.com/forum/download/file.php?id=2675

It seems I see the 3-5 in conjunction with the shimari fuseki by black fairly often. Was the 3-5 a way to overcome the absence of komi by instigating intricate fights?

In the taisha joseki, whoever had the diagonal corner would have some advantages in the ladder variations (which were many). It was a tactic used by White in classical no-komi go. As komi came into fruition Black naturally adopted some of the strategies that White had been using for the last hundred years. There were also many other tactics and innovations in the days of White no-komi, which you can find more information about in "Old Fuseki vs. New Fuseki."

[gasana]

move 87 in the second game, Lee was playing another game

[Dusk Eagle]

makes me question - having to connect along on dame in gote like that doesn't feel too good. I wonder if Kang caught Lee off guard with his moves after , or if there's just something I'm missing and was okay after all.