(;SZ[19]EV[16th Fujitsu Cup round 2]DT[2003-04-14]KM[6.5]PC[Tokyo, Japan]PB[O Rissei]BR[9p]PW[Cho Hunhyun]WR[9p]RE[B+4.5]C[Commentary:Qian Yuping 9p,
Source: Weiqi Journal,
Translation:GoGameWorld.];B[pd]C[Fujitsu Cup usually takes place between April and May in Japan, at that time you can always see beautiful cherry blossom everywhere. I remember it was a very happy journey at the time when I participated in the Fujitsu Cup (in 1991). Now let's take a look at the game between O Rissei and Cho Hunhyun.];W[dd];B[pq];W[dp];B[qo]C[The moves of B1, B3 and B5 form the "Kobayashi Style", which is the masterpiece of the Japanese Kobayashi Koichi 9p.]
;W[jq];B[cn]
(;W[fp]LB[cl:a][cq:b][dq:c][cp:d][do:e][bn:f][em:g]C[W8: White can also play at 'a', followed by B 'b', W 'c', B 'd', W 'e', B 'f' and W 'g' (see var a).]
(;B[cj]LB[bp:a][cm:b][bm:c][bn:d][dm:e][cl:f][bl:g][co:h][dn:i][bo:j][ck:k][nd:l][ej:m]C[B9 is rarely seen. The usual sequence for Black is B 'a', W 'b', B 'c', W 'd', B 'e', W 'f', B 'g', W 'h', B 'i', W 'j', B 'k', W 'l' and B 'm' (see var a).]
(;W[mq]LB[cl:a][bl:b][bk:c][ck:d][bm:e][dl:f][cm:g][dm:h][dn:i][bn:j][al:k][cp:l][do:m][cq:n][ci:o]C[The two-space extension of W10 is the big point, White can also invade on the left side. The invasion at 'a' is very powerful, if Black attaches at 'b', then White would hane at 'c', followed by B 'd', W 'e', B 'f', W 'g', B 'h', W 'i', B 'j', W 'k', B 'l', W 'm', B 'n' and W 'o', Black's shape on the left is relatively thin and White is interesting (see var a).]
;B[cf];W[fc];B[bd]
(;W[cc]LB[df:a][dg:b][ef:c][dh:d][nc:e][pf:f][kd:g]C[W14 at 'a' would be better, followed by B 'b', W 'c', B 'd', W 'e', B 'f' and W 'g' (see var a).];B[dh];W[ic]LB[nc:a]C[The two-space extension of W16 is over-steady, White should directly approach the corner at 'a'.];B[pj];W[nc]
;B[pf];W[qc];B[pc];W[pb]
(;B[qd]LB[ob:a][qb:b][oc:c][re:d][rf:e][qe:f][qf:g][pe:h][oe:i][of:j][ne:k][og:l]C[B23 is the right move, the hane move at 'a' seems unreasonable, followed by W 'b', B 'c', W 'd', B 'e', W 'f', B 'g', W 'h', B 'i', W 'j', B 'k' and W 'l', Black's territory on the right side would have been ruined and Black is no good (see var a).];W[rb]
;B[rc];W[qb];B[cq];W[cp];B[bp];W[dq];B[br];W[cr];B[bq];W[ne];B[ng];W[ql]LB[qn:a]C[The invasion of W36 is a good move, it would be overhasty for White to attach at 'a' directly.]
;B[qj];W[qn];B[pn];W[ro]
(;B[rn]LB[qp:a][pm:b][rm:c][qm:d]C[B41 at 'a' is a little better, followed by W 'b', B 41, W 'c' and B 'd', it would lead to a ko (see var a).];W[qm];B[rp];W[po];B[qp];W[on]
(;B[no]LB[oo:a][pm:b][nn:c][mo:d][mn:e][lq:f][lr:g][ln:h][lm:i][km:j]C[With regard to the sequence of B47 to B53, I feel that Black's resulting shape is not good. Now the atari at 'a' is a good move, followed by W 'b', B 47, W 'c', B 'd', W 'e', B 'f', W 'g', B 'h', W 'i' and B 'j', this would be a relatively proper play (see var a).];W[nn];B[mo];W[oo]
;B[nq];W[nr];B[oq];W[ok];B[oj];W[lr];B[jd];W[jc];B[kd];W[he];B[md];W[nd];B[mp]
;W[em]LB[mk:a][nj:b][lm:c]C[W64 is the reason why White gets into a bitter battle later on, at this juncture White should play at 'a', then B 'b' and W 'c', strengthening the group on the right side is the correct play.];B[lq];W[mr];B[jo];W[hp];B[nl]C[The strike of B69 is severe, White sinks into a bitter battle.];W[nk];B[ol]LB[ml:a]C[B71 is the vital point for the shape, if Black simply extends at 'a', then White would turn back at 71, Black's stones are inefficient.]
;W[pk];B[ml];W[mk];B[ll];W[lk];B[kk];W[kj];B[jj];W[ki]C[Through 80, White is a bit painful, for the game Black is a little favorable.];B[mi]C[After Black strikes with B81, White feels miserable.];W[mh];B[mg]
;W[rm];B[so];W[li];B[nh];W[jk];B[kl];W[ij]C[With the ensuing sequence up to 90, although White captures one black stone, but Black is thick across the board, the impact on Black is minimal.];B[lf];W[pl]LB[pm:a]C[W92 is not good, White should take one stone at 'a', comparing with the game play White would get a half eye.];B[dl];W[bc]
;B[mb];W[nb];B[kq];W[kr];B[mj];W[lj];B[hf]C[B101 serves as the ladder-leader.];W[gf];B[gg];W[hg];B[if];W[gh]C[With the hane of W102 and the double-atari of W104 and W106, although White has prevented one black stone in the center from pulling out, but White's shape is not good.]
;B[fg];W[rk];B[rj];W[qs]LB[jp:a]C[W110 is the losing move, White should bump at 'a' first, then enter the corner with the large knight's move, for White, this variation would be 3-point better than the one in the game];B[jp];W[ip];B[in];W[dm];B[cm];W[el];B[dk];W[be]C[W188 is the biggest point on the board.]
;B[ce];W[cd];B[bf];W[ad];B[dr]C[B123: Black captures one white stone, it is worth about 11 points.];W[er];B[cs];W[il];B[jl];W[ji];B[im];W[hl];B[rd]
;W[lb]C[After W132, although White captures one black stone, but it hurts White on the left side, White is no good.];B[kb];W[mc];B[kc];W[af];B[hd]C[B137 is the winning move!];W[ah];B[bi];W[hc];B[gd];W[rr];B[gc]
;W[gb];B[fb]
(;W[fd]LB[hb:a][ec:b][ed:c][fe:d][ee:e][id:f][db:g][jb:h][ba:i][bb:j][ab:k][ca:l][cb:m]C[W146 is the right move, if White directly connects at 'a', it would fall into Black's trap. If White connects at 'a', then Black would atari at 'b', followed by W 146, B 'c', W 'd', B 'e', W 'f', B 'g', W 'h', B 'i', W 'j', B 'k', W 'l' and B 'm', as a result, White's corner would become ko-alive, White is no good (see var a).];B[id]
;W[hb];B[eb];W[db];B[jb];W[ec]C[Through 152, Black has obtained a big profit, the balance of the game has tilted to Black.];B[hh]C[The atari of B153 is the biggest point on the board, it is worth about 7 points.];W[gi];B[ig];W[es];B[gm]
(;W[gn]LB[hm:a][hn:b][go:c][fn:d][gp:e][gq:f][ho:g][hq:h][fk:i]C[W158: If White tries to capture B157 by playing at 'a', then B 'b', W 158, B 'c', W 'd', B 'e', W 'f', B 'g', W 'h' and B 'i', White's losses would outweigh his gains.];B[hi];W[hj];B[hm]C[The connection of B161 is a solid move.]
;W[fj]LB[gj:a]C[W162 is a big move, otherwise Black could cut at 'a'.];B[fn];W[mn];B[ln];W[co];B[bo];W[of]C[W104 and W108 is worth 2+ points in sente.];B[oe]LB[og:a][pe:b][qe:c][qf:d]C[B169 is a good move, if Black instead blocks at 'a', then W 'b', B 'c', W 169 and B 'd', Black would suffer a loss of about 2 points.]
;W[nf];B[og];W[rq]LB[fe:a]C[The value of W172 and B 'a' is equal (about 6 points).];B[pr];W[ps];B[go];W[gp];B[lc];W[ma];B[fe];W[lm];B[kn]
;W[mm];B[ho]LB[lh:a]C[B183: Black should take one stone at 'a', it is worth about 5 points.];W[de];B[eo];W[km];B[jm];W[ep];B[ek];W[fk];B[gl];W[gk];B[fo]
;W[fl];B[lh];W[ef];B[ff];W[sj];B[si];W[sk];B[ri];W[jg];B[kg];W[jh];B[jf];W[me]
;B[sm];W[le];B[qk];W[rl];B[om];W[pm];B[fi];W[fh];B[ei];W[ih];B[eh];W[gj];B[ke]
;W[sq];B[sp];W[bh];B[ch];W[ds];B[cr];W[sc];B[sd];W[sb];B[ai];W[ag];B[bg];W[ae]
;B[or];W[os];B[ee];W[df];B[ed]LB[fa:a]C[The atari of B237 is alert, otherwise White would atari at 'a', Black would suffer one-point loss. Both sides didn't make any mistake in the following endgame.];W[dc]C[Overall, the play for both sides is relatively insipid, there is no big turn in the game, it is a prolonged and marathon race, it is a game of patience and skill. It can also be said this game is a complete victory for O Rissei. It is also surprising that the recently red-hot Cho Hunhyun 9p didn't get any chance in the game.];B[cg]C[From this game, we can see O Rissei's solid skill, I think O Rissei would stay at his height of power for a long time. How wonderful it would be if I can meet him in an important tournament in the near future.];W[ej];B[dj];W[op];B[np]
;W[nj];B[ni];W[od];B[pe];W[ld];B[oc];W[ob];B[ib];W[fa];B[ha];W[ea];B[ka];W[la]
)
(;W[hm]C[If White tries to capture, ...];B[hn];W[gn];B[go];W[fn];B[gp];W[gq];B[ho];W[hq];B[fk]C[White's losses would outweigh his gains.]))
(;W[hb]C[If White connects here, ...];B[ec];W[fd];B[ed];W[fe];B[ee];W[id];B[db];W[jb];B[ba];W[bb];B[ab];W[ca]
;B[cb]C[The corner would be ko-alive, White is no good.]))
(;B[oo]C[Black should atari here.];W[pm];B[no];W[nn];B[mo];W[mn];B[lq];W[lr];B[ln];W[lm];B[km]C[This would be better for Black.]))
(;B[qp]C[For Black to play here would be better.];W[pm];B[rn];W[rm];B[qm]C[This would lead to a ko.]))
(;B[ob]C[If Black blocks here, ...];W[qb];B[oc];W[re];B[rf];W[qe];B[qf];W[pe];B[oe];W[of];B[ne];W[og]C[Black's territory on the right would have been destroyed.]
))
(;W[df]C[It would be better for White to play here.];B[dg];W[ef];B[dh];W[nc];B[pf];W[kd]))
(;W[cl]C[White can also play here.];B[bl];W[bk];B[ck];W[bm];B[dl];W[cm];B[dm];W[dn];B[bn];W[al];B[cp];W[do]
;B[cq];W[ci]))
(;B[bp]C[Normally Black will play here.];W[cm];B[bm];W[bn];B[dm];W[cl];B[bl];W[co];B[dn];W[bo];B[ck];W[nd];B[ek]C[This is also playable.]
))
(;W[cl]C[White can also pincer here.];B[cq];W[dq];B[cp];W[do];B[bn];W[em]C[This is a very common variation.]))