(;B[qd]SZ[19]DT[1820-05-15]PB[Honinbo Jowa]BR[6dan]PW[Yasui Senchi]WR[8dan]RE[B+2]C[Senchi (1776-1838) was previously called Nakano Chitoku, was one of the strongest players of his day. Although he lost this game by 2 points, this is recognised as the best game he played and it has also been called the most exquisite game ever played. ]US[tasuki];W[dc];B[cp];W[pq];B[ep];W[oc];B[ce]
;W[ci]C[ The opening to White 8 was often seen in games of this period. ]
(;B[ck]C[ Black could also play either "a" or "b" first. ]
(;W[ed]C[ According to Suzuki Tamejiro 9-dan "a" is preferable, but then the whole course of the game would have been changed, not just the joseki moves in this corner. ]
(;B[df]C[ Hashimoto Shoji calls this a tenacious move. If Black played "a" instead.. ];W[ei]
(;B[dh]C[ This is just the right time to peep here. If Black had played at "a" first..];W[di];B[bc];W[cg];B[dg];W[bf];B[ch];W[bh];B[cf];W[bg];B[be];W[hc]C[ The moves from 12 to 24 were a well-established joseki at that time. ]

(;B[ek];W[bj]C[ White 26 is a quiet move characteristic of Senchi. If White plays elsewhere, then Black would play at 26 and then at A, putting White in an awkward situation. ];B[qo];W[jq]C[ Normally a move on the third line, where the opponent can press down making the position low, would be taboo. ];B[op];W[oq];B[np];W[nq];B[mp];W[mq];B[lp];W[lq]

(;B[pe]C[ Hashimoto Shoji recommended Black "a" instead of 37, since this move is too orthodox. If Black had played at "b".. ];W[qj]C[ However, Senchi was content with getting 38 in to erase Black's influence. ]
(;B[nd]C[ Black 39 is the convential move of the day, but modern professionals think that this would be better left until Black is sure whether he wishes to play here or at "a". However, White would very much like to play at A in order to develop the upper side. ];W[mc];B[qh]
(;W[bk]C[ If White had played at "a".. White 42 is seen to be another quiet and persevering move. ];B[ql];W[oj]
(;B[bl]C[ Black 45 is questionable because it is a bit too hasty or perhaps played out of fighting spirit. A move at "a" or "b" would have been sounder. ];W[cl]C[ White 46 is a dauntless move. The fight here, seemingly small in scale, grows bigger and bigger and extended over the whole board. ];B[dl];W[cm];B[bm]
(;W[dm]C[ White cannot play at "a". ];B[em];W[dn]
(;B[bn]C[ Black cannot now play at "a". ];W[en]
(;B[fk]C[ Black should not play at "a". Black 55 is a very good move, which has influence over all three floating White groups. The game was adjourned and resumed on April 30. ];W[fm]C[ White 56 is a vital point, never to be neglected. ];B[gg]
(;W[gh]C[ White 58 is another good, tenacious move. By leaning against Black 57 White reinforced his group and was able to make an attack on the Black group in the middle. If White just jumps out into the centre at "a".. ];B[gj];W[fh];B[fg];W[hg];B[hf];W[hh];B[ge];W[ij];B[hl];W[dq]C[ The timing of this probe is of the utmost importance. ]
(;B[dp]C[ If White's group above was safe, Black would play at "a". However, Black can't just let White connect easily at the moment. ];W[gl];B[gk];W[hm];B[ik];W[im];B[gn];W[gm];B[jk];W[cq];B[bq];W[br];B[bp]
;W[fr];B[fq]
(;W[er]C[ White 84 is another quiet move. If he played at "a".. The game wasd adjourned again and resumed on 14 May. ];B[hq];W[kl];B[kk];W[ll];B[jh];W[jg];B[kh];W[if];B[ie];W[kg];B[lh];W[ol]
;B[ar];W[ds];B[gr];W[fs];B[jc]C[ Sekiyama Sendaiu said that Jowa knew when he played 101 that he would win by 2 points and that Senchi could not reduce the margin. However, see the comments by Ohira Shuzo in "Appreciating Famous Games", page 126. Jowa spent 3 hours on this move. ];W[jd]C[ Senchi then spent 3 hours on his reply. This is a good move and White is hoping to sacrifice 102.According to Suzuki Tamejiro, Jowa was so surprised on seeing 102 that he was afraid he might lose and it was only after much deliberation that he was able to find the sequence that follows. ]
(;B[je]C[ If Black plays at "a".. ];W[kd];B[ke];W[ld]
(;B[ih]C[ It would have been futile to try to kill the big White group. ]
(;W[ai]C[ White cannot connect at "a". ];B[gc];W[gb];B[fc]
(;W[gd]C[ White 12 is a tesuji; if he just plays at "a".. ]
(;B[fb]C[ If Black plays at "a".. ];W[fd];B[hb];W[hd];B[ig];W[ib];B[ga];W[jb];B[db];W[on];B[pp];W[rp];B[ro]
;W[qp];B[pn];W[mn]C[ White profits from this attack. ];B[sp];W[rr];B[rk];W[rj];B[pk]C[ A dangerous plot is hidden in these moves. Black is threatening to cut off some White stones and, since the surrounding Black groups are strong, White would find resistance difficult. ];W[qk]C[ White 34 is good. Usually this causes the outside White group to become thin but in this situation, the territory is more important. ];B[pl];W[rh];B[pj]
;W[qi];B[pi];W[gp];B[hp];W[go];B[gq];W[qg];B[ho];W[jo];B[ph];W[rl];B[rm];W[sk]C[ Up to White 50, White has gained 6 points and reduced Black's territory by as much. ]
;B[ko];W[kp];B[jn]C[ Black 51 and 53 are tesuji. ];W[kn];B[in];W[jm];B[lo];W[hn];B[io];W[fo];B[pc];W[ob];B[pb]
;W[le];B[lf];W[ec];B[eb];W[re];B[od];W[ok];B[oa];W[mb];B[ma];W[la];B[na];W[id]
;B[jp];W[kq];B[rd];W[hi];B[mj];W[ln];B[rf];W[qf];B[qe];W[rg];B[se];W[sq];B[ir]
;W[jr];B[mk];W[oo];B[po];W[he];B[jf];W[fe];B[gf];W[cc];B[cb];W[me];B[nm];W[om]
;B[nl];W[nn];B[sm];W[sl];B[ak];W[cj];B[dk];W[mm];B[jl];W[el];B[fl];W[km];B[bs]
;W[cr];B[iq];W[ml];B[nk];W[mg];B[lg];W[ef];B[eg];W[lk];B[lj];W[jj];B[kj];W[cd]
;B[mf];W[bd];B[ad];W[ni];B[so];W[mi];B[ng];W[mh];B[ne];W[of];B[nf];W[og];B[ha]
;W[af];B[ae];W[lb];B[ia];W[ja];B[pm];W[co];B[bo];W[sg];B[js];W[ks];B[is];W[sf]
;B[re];W[gs];B[em];W[hs];B[de]C[Black wins and connects the kos. ])
(;B[fd];W[fb];B[hb];W[ic]C[   Because of the liberty taken by \\t, White can answer 3 at 4. ]))
(;W[fb];B[hb];W[ib];B[ic]C[   Black will break in with 2 and 4. ]))
(;W[ig];B[ai]C[   This time White is in real danger. ]))
(;B[ai];W[hj];B[hk];W[ih];B[jj];W[lg];B[mg];W[mf]C[   It would be too much to try to kill the group with 1. ]))
(;B[id];W[ic];B[jf];W[ig];B[kd];W[jb];B[je];W[kb]C[   White hopes to sacrifice the stone and connect underneath. ]))
(;W[gq];B[gp];W[hq];B[ip]C[   Black will keep the pressure on the central White group. ]))
(;B[cq];W[dp];B[dr];W[eq];B[er];W[fq];B[mj]C[   Black would play the sequence to 6 so that he could get to 7 and attack   the two White stones. ]))
(;W[gi];B[hk];W[ii];B[fo]C[   White's group is now in trouble. ]))
(;B[fm];W[fn];B[gm];W[gn];B[hm];W[gp]C[   Once White has escaped with his group up to 6.. ];B[tt]C[   Black plays elsewhere.. ];W[dk];B[dj];W[cj];B[dk];W[fk]C[   White can attack his shape with the moves to 12. ]
))
(;B[en];W[bn];B[cn];W[do]C[   Because White will now play at 4. ]))
(;W[bn];B[cn];W[dm];B[em];W[dn];B[do];W[en];B[fn];W[co];B[eo]C[   He would be captured. ]))
(;B[cm])
(;B[cl]))
(;W[qm];B[bk]C[   Black would have played at 2, attacking and gaining profit at the same   time. ]))
(;B[lc]))
(;B[od];W[nd];B[oe];W[pc];B[qc]C[   This would then make A and B miai and this would give a better development   for Black. ])
(;B[pj];W[pe];B[qe];W[pf];B[qf];W[pg];B[qg];W[ph];B[qh];W[pi];B[qi];W[fg]C[   White would play the sequence to 12 and his potential would be bigger than   Black's. ]))
(;B[bj];W[bi];B[ek];W[fg];B[ff];W[gf];B[fe];W[ge];B[fd];W[fc];B[gd];W[hd];B[fh]
;W[eh];B[eg];W[gg];B[gc];W[gb];B[fb];W[eb];B[fa];W[ea];B[ec];W[ee];B[ef];W[fc]C[   If Black peeps at 1 first and then plays at 3, White may resort to the ko   up to 26, because 1 could have been used as a ko threat. Black has no   threats that White must answer. ]
))
(;B[bc];W[cg];B[dh];W[dg]C[   White would answer 3 with 4. ]))
(;B[cg];W[ei];B[eg];W[ek]C[   Black has lost tempo and is a move behind. ]))
(;W[fd]))
(;B[fe]
(;W[gc];B[ck]C[   Black could choose to make the preliminary move at 1 and if White answers   at 2, then pincer at 3. ])
(;W[cl]C[     But White may respind here. ];B[fc]C[     White may choose to make a base with 2 instead. ]))
(;B[ed];W[ec];B[fd];W[gc];B[ck]C[   Some modern players would be reluctant to play 1 and 3 since it gives   White certain territory and a base. ]))