(
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GameName[Restugen-YasuiSenchi11051787]
PlayerBlack[Yasui Senchi Senkaku (0-Senchi)]
PlayerWhite[Honinbô Retsugen]
HAndicap[0]
SiZe[19]
GameComment[A joint Oversignt by Quasi-Meijins.]
DaTe[1787-05-11]
BlackRank[6 Dan]
WhiteRank[7 Dan]
KoMi[0]
USer[J. Hubert]
SOurce[Go World 22 Kido September 1963 commented by Kitani]
REsult[Black +13]
Comment[ A joint oversight by Quasi-Meijins. The above is the tag by which the game given here is known to go history. Strictly speaking, the players did not become quasi-Meijin(I. E. 8-dan) until some fourteen years after the game was played, but it did become famous for a tesuji which they both missed]
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Black[qd]
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White[ed]
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Black[oc]
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White[qo]
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Black[cp]
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White[eq]
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Black[do]
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White[fp]
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Black[fo]
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White[go]
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Black[fn]
(
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White[iq]
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Black[gn]
Letter[cj]
Comment[Black 13 : a thick move, but extending at "a" to forestall White 14 would also be a good move]
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White[ci]
Comment[If white plays a shimari in the corner at 15, then Black will play at 14.]
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Black[cd]
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White[df]
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Black[ck]
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White[cc]
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Black[cf]
(
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White[dd]
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Black[ce]
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White[bc]
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Black[dg]
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White[dk]
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Black[cl]
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White[cg]
(
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Black[dh]
Comment[Black 27 is very agressive. ]
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White[ch]
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Black[de]
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White[ef]
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Black[ee]
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White[fe]
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Black[ff]
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White[eg]
(
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Black[fd]
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White[ge]
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Black[gf]
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White[hf]
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Black[dc]
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White[ec]
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Black[db]
Comment[The variant is not possible]
(
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White[fb]
Comment[White 42 is an important tesuji. ]
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Black[eh]
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White[fg]
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Black[gg]
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White[fh]
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Black[hg]
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White[hh]
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Black[eb]
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White[fc]
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Black[gd]
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White[he]
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Black[hd]
Comment[White played to the right of 47, capturing four black stones, but letting capture the white stones at the top. However white actualy has an exquisite two moves combination here which was overlooked by both players. Can you find it before going further?]
(
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White[ig]
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Black[gb]
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White[bf]
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Black[gc]
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White[be]
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Black[fa]
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White[pq]
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Black[qj]
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White[ho]
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Black[oj]
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White[oh]
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Black[qh]
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White[nd]
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Black[nc]
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White[ld]
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Black[oq]
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White[op]
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Black[nq]
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White[pr]
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Black[mo]
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White[mi]
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Black[ie]
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White[gh]
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Black[nh]
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White[ni]
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Black[og]
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White[ng]
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Black[nf]
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White[mh]
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Black[of]
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White[lq]
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Black[oo]
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White[np]
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Black[mp]
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White[no]
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Black[nn]
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White[pp]
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Black[mq]
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White[mn]
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Black[jq]
Comment[This 93 is an interesting move.]
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White[lr]
Comment[With 94, white tries desperately to stop Black from getting two eyes, but he cleraly has an upphill job.]
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Black[ln]
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White[mm]
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Black[ip]
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White[hq]
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Black[lm]
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White[ll]
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Black[ml]
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White[nm]
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Black[lp]
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White[ko]
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Black[jo]
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White[kn]
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Black[kp]
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White[km]
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Black[hr]
Comment[This Black looks strange but it is quite a clever move. If white resists...]
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White[gq]
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Black[ir]
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White[os]
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Black[in]
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White[hn]
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Black[hm]
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White[im]
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Black[gr]
(
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White[hl]
Letter[fr]
Comment[White cannot block at "a" ]
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Black[lo]
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White[kl]
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Black[gm]
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White[jn]
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Black[fr]
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White[io]
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Black[ns]
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White[nr]
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Black[mr]
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White[ms]
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Black[dr]
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White[ph]
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Black[qg]
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White[dl]
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Black[dm]
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White[em]
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Black[dn]
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White[gl]
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Black[lf]
Comment[White 136 and Black 137 are almost miai]
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White[je]
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Black[ke]
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White[id]
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Black[jd]
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White[if]
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Black[jc]
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White[ic]
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Black[ib]
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White[kd]
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Black[kc]
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White[mf]
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Black[me]
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White[lg]
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Black[le]
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White[ne]
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Black[mg]
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White[er]
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Black[es]
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White[mf]
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Black[md]
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White[kf]
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Black[mg]
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White[dq]
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Black[cq]
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White[mf]
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Black[lc]
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White[ql]
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Black[nk]
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White[pg]
Comment[The exchange to Black 171 is forced as shows the variation.]
(
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Black[qm]
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White[pf]
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Black[pl]
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White[re]
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Black[on]
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White[rm]
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Black[pm]
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White[rl]
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Black[lk]
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White[oe]
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Black[kk]
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White[jk]
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Black[fl]
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White[fk]
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Black[jj]
Letter[kj]
Comment[White 182 : it is advisable not to cut at "a" as show the variation]
(
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White[ij]
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Black[rd]
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White[cb]
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Black[ki]
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White[ji]
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Black[kj]
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White[bj]
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Black[cj]
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White[dj]
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Black[bk]
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White[bi]
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Black[aj]
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White[jh]
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Black[qe]
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White[ks]
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Black[kr]
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White[js]
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Black[jr]
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White[qf]
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Black[rf]
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White[ri]
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Black[rh]
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White[qi]
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Black[qk]
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White[sh]
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Black[rn]
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White[qn]
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Black[rk]
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White[ro]
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Black[rg]
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White[pj]
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Black[pk]
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White[pi]
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Black[kg]
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White[jf]
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Black[el]
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White[ek]
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Black[fm]
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White[kh]
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Black[ik]
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White[jl]
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Black[ep]
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White[fq]
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Black[hp]
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White[jp]
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Black[sl]
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White[sn]
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Black[jo]
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White[cr]
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Black[ds]
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White[jp]
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Black[bd]
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White[ad]
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Black[jo]
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White[fs]
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Black[gs]
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White[jp]
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Black[ab]
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White[ac]
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Black[jo]
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White[cs]
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Black[fs]
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White[jp]
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Black[hj]
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White[ii]
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Black[jo]
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White[cm]
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Black[bm]
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White[jp]
Comment[Moves after 250 are not recorded.
Black wins by 13 points.
This game is a good example of Senchi's agressive style. There are some other games from him that demonstrate his affinity with New Fuseki.]
)
(
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White[kj]
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Black[gk]
Comment[Black has the tesuji of cutting.]
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White[fm]
Letter[hk][ek]
Comment[If white captures, Black a nice combination. If he compromises at "a", then he can plays atari at "b" to reduce White territory.]
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Black[il]
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White[hk]
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Black[ik]
)
)
(
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Black[pf]
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White[qf]
Letter[mg]
Comment[As Black cannnot win the Kô at "a", he has to defend]
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Black[rf]
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White[pi]
Comment[Now Black has no answer to this move.]
)
)
(
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White[fr]
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Black[hp]
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White[gp]
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Black[io]
Letter[cr][ep]
Comment[Now, it is a semeai : Black can win it easily when White plays a or b.]
(
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White[cr]
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Black[ep]
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White[fq]
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Black[br]
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White[dr]
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Black[cq]
Comment[Black wins the semeai]
)
(
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White[ep]
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Black[dr]
Comment[Black wins also]
)
)
)
(
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White[ir]
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Black[jr]
(
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White[hp]
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Black[or]
)
(
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White[os]
Comment[If white resist again ]
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Black[hp]
Comment[Black can escape with this variation]
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White[gq]
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Black[in]
)
)
)
(
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White[jr]
Comment[This white will be a big move, but then Black will secure his group as the variation shows. White strategy in the figure is to use his attack on Black to build a large centre.]
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Black[kl]
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White[lk]
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Black[jm]
)
)
(
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White[hc]
Comment[This White 54 is the move which both players missed. ]
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Black[id]
Comment[Black has no choice but to extend]
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White[ie]
Letter[je]
Comment[And white has this exquisite continuation. The latter move is easy to overlook because it makes such a bad shape. In fact, however, this clever combination saves both the white stones at the top and the stones in the centre, as Black cannot get a ladder at "a".This tesuji was discovered by a spectator, Wakayama Ritcho, then 3-dan, who pointed it out to the players after the game causing them both considerable embarassment. The oversignt became famous when Genan Inseki (1798-1859, the 11th Inoue), discussed it in his book "Igo Myoden" (Curious Go Stories) published in 1852. Black would have been in a lot of trouble if white had followed this variation, whereas the exchange to 59 in the figure is favourable for him. All he has to do now to keep ahead is to get a reasonnable result when he invades at the bottom.]
)
)
(
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White[eb]
Comment[If White simply plays like this, Black will attach.]
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Black[fb]
Comment[As Black "B" is sente , White cannot stop Black from getting a ladder at "C".]
Letter[fc][he]
)
)
(
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Black[gf]
Comment[Black could also simply extend with 35 in this variation.]
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White[eh]
Comment[White would have to play here to forestall the ladder]
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Black[fd]
Comment[So Black can cut.]
(
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White[ge]
Comment[If white goes out, Black can capture 2 stones]
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Black[fc]
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White[eb]
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Black[fb]
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White[ec]
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Black[he]
)
(
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White[fc]
Comment[White could play here, sacrificing one stone.]
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Black[ge]
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White[gc]
Comment[Since White takes profit at the top and on the side, if Black A, White B ), Senchi was presumably dissatissfied with this result. ]
Letter[di][ej]
)
)
)
(
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Black[ch]
Comment[If Black just wanted to escape, he could easily break through White's wall with the combination of the variation beginning with this move]
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White[bg]
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Black[de]
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White[ef]
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Black[eg]
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White[bh]
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Black[ee]
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White[ff]
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Black[fe]
)
)
(
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White[cg]
Comment[If white tries to block with this move, Black would have no trouble living, the sequence shown being one possibility.]
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Black[bc]
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White[dc]
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Black[de]
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White[ee]
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Black[dg]
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White[ef]
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Black[bg]
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White[ch]
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Black[be]
)
)
(
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White[gn]
Comment[If White plays this move, Black can cut with 13 as the ladders showed by this variation favours him.]
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Black[gp]
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White[hp]
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Black[gq]
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White[hq]
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Black[fr]
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White[er]
;
Black[hr]
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White[ir]
;
Black[iq]
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White[jr]
;
Black[ho]
;
White[ip]
;
Black[gm]
)
)