(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[6.50]PW[Mok Jinseok]PB[Cho Daehyeon]WR[9p]BR[9p]DT[2007-12-04]EV[9th Korean Maxim Cup, semi-final]SO[Go4Go.net]RE[W+7.50];B[pd]C[This is the game from the 9th Korean Maxim Cup. Black is Cho Daehyeon, 9-dan. White is Mok Jinseok, 9-dan];W[dd];B[pq];W[dq];B[do];W[co];B[dp];W[cp];B[eq];W[cn];B[qk]LB[dn:A]C[The plan is typical for Cho Daehyeon, 9-dan. He hates complicated josekis and never plays the nadare at A];W[dr];B[jp];W[po]LB[nc:A]C[White may start from the kakari at A];B[np](;W[no]C[Nowadays this plan is popular -];B[mo]LB[oo:A]C[The most common answer, Black may also think about attacking at A];W[qq];B[qr];W[pr](;B[oq]C[A solid plan -];W[rr];B[qp];W[rq];B[pp]LB[rp:A]C[Another solid move. Black may extend at A instead, but the adji would be bad];W[or];B[nr];W[rp];B[qo]C[The result is equal - it's a kind of a joseki];W[nc](;B[oe]TR[qk]C[The favorite move of Cho Daehyeon, 9-dan, but it looks a bit strange here, because the marked stone is low -];W[qc];B[pc];W[qd];B[qf](;W[pb]LB[rf:A]C[White may start from the attachment at A -];B[ob]C[Tennuki would be best here. Later Black can play at P18 or at R15, according to the situation];W[qb];B[oc];W[rf]LB[qe:A][pf:B]C[The right answer. White can make the A-B exchange and take sente, but it's rude];B[rg];W[re](;B[jd]LB[id:A]C[This move is too close to the wall. Black must think about the extension at A -];W[gd];B[he];W[hd];B[id];W[if];B[ie];W[ii]C[The opening looks promising for White](;B[ki]LB[qg:A]C[There is a big weakness at A, so Black cannot make any big territory on the right.I think, that his plan is wrong -];W[ik];B[kk];W[qg]C[The cut is painful for Black];B[pg];W[qh];B[ph];W[qi];B[pi];W[ff]C[Black's opening clearly failed];B[cc]LB[cd:A]C[It's better to attach at A];W[cd];B[dc];W[bd]C[The strongest answer];B[fb];W[gb];B[ed];W[ee];B[fd];W[ge](;B[hf]C[Black can live inside, but ... -];W[bb];B[hb];W[ga]C[Black lost some territory by invading];B[bc];W[ac];B[gi];W[gk];B[de];W[ef];B[ab];W[aa];B[cf];W[ce];B[df];W[bf];B[bg];W[af];B[ae];W[ad];B[ch];W[cb];B[ck];W[im]C[Black is still behind];B[fo];W[io];B[ip];W[jo]C[A careful move, which defends the group and makes Black's moyo smaller];B[ko];W[kn];B[ln]LB[lo:A]C[The shape is poor. It must be at A];W[kp];B[lo];W[hp]C[Now Black is in trouble];B[hq];W[gq];B[ir];W[gr];B[jr];W[en]C[Black lost a lot of points here. Now the game is hopeless for him.This is the last note.];B[jh];W[qj];B[pj];W[rk];B[ql];W[km];B[lm];W[ih];B[ig];W[kl];B[ll];W[jk];B[jj];W[ij];B[hg];W[pf];B[of];W[ib];B[hc];W[gc];B[ic];W[ha];B[jb];W[rl];B[rm];W[rn];B[qn];W[bl];B[cl];W[bk];B[bj];W[cm];B[bm];W[bn];B[ak];W[am];B[dj];W[ji];B[kj];W[dl];B[ek];W[el];B[sl];W[rj];B[hr];W[go];B[os];W[qs];B[ag];W[be];B[fk];W[fl];B[eg];W[fg];B[fh];W[dg];B[cg];W[eh];B[ei];W[dk];B[cj];W[oa];B[na];W[pa];B[nb];W[ia];B[ja];W[ro];B[gj];W[hj];B[dh];W[fc];B[pe];W[eg];B[rh];W[si];B[sk];W[sg];B[ec];W[eb];B[gg];W[db];B[gf];W[fe];B[gs];W[fs];B[hs];W[hh];B[gh];W[sn];B[sm];W[qe];B[ns];W[ps];B[pf];W[sj];B[qm];W[al];B[aj];W[hi])(;B[bc];W[hf];B[kf];W[fo]C[... White's moyo on the left would be so deep]))(;B[gi]C[I would prefer to attack White's group from the other side]))(;B[qg];W[jd]C[This connection is big, but slow]))(;W[rf];B[rg];W[re];B[qg];W[pb];B[ob];W[qb];B[ii]C[It's hard to say, which strategy is better]))(;B[lc];W[qc];B[pc];W[qd];B[pe];W[pb];B[ob];W[qb];B[oc];W[qf];B[gd];W[df];B[pg]C[I would prefer to play the pincer]))(;B[qp];W[oq];B[rq];W[pp];B[nn];W[qq]C[Nowadays it's more popular to play this ko]))(;W[qq];B[qr];W[qp];B[rr];W[qm];B[nn];W[om];B[on];W[pn];B[pl];W[rk];B[rj];W[rl];B[qi];W[pm]LB[nc:A][pf:B]C[It's a joseki too, but usually White uses it after the A-B exchange, which makes Black overconcentrated on the right]))