(;SZ[19]EV[4th Chunlan Cup semi-final]DT[2002-12-28]KM[7.5]PC[Shengzhen, China]C[Copyright by gogameworld.com and weiqi.tom.com.]BR[9p]WR[9p]PB[Chang Hao]PW[Lee Changho]RE[W+R];B[pd]C[Chang Hao 9P of China is black];W[dp]C[Lee Chang Ho 9p of Korea is White];B[pq]LB[fq:a][cn:b][jp:c]C[Recently Chang Hao often plays the opening of star and 3-4 point, if there is a chance, with the sequence of B 'a', W 'b' and B 'c', a Kobayashi's basic fuseki will develop.]
;W[dc];B[de];W[dh];B[cj]C[Black counter pincers and is seldom seen, Hua Yigang 8p jokingly calls it "Zude Style", because this move was often adopted in the fast games between Chen Zude 9p and Hua Yigang. Today Chang Hao suddenly chooses this play, not sure whether he ever consulted with Mr. Chen.];W[fd]C[Lee Changho answers with a steady knight's move, eptomizing his style.];B[cn];W[fq];B[cc];W[cb];B[cd]C[The attachment and pull-back of B11 and B13 are natural moves, enticed by big points, Lee Changho is pondering.];W[cg];B[ec]LB[fe:a][ge:b][ed:c][fc:d][ff:e]C[B15 is a violent play, however, after deep study,  Zhou Heyang 9p thinks this move is more or less unreasonable. The common play is at 'a', followed by W 'b', B 'c', W 'd' and B 'e'. (In the postgame analysis, top pros agree Chang Hao was overzealous, and B15 is the losing move.)]
;W[eb];B[fc];W[ed];B[dd];W[db]C[After both sides make careful consideration, a fierce fight results.];B[gc];W[gd];B[hc];W[bc];B[bd];W[bb];B[ff];W[hd]
;B[id];W[hf]LB[ic:a][ee:b]C[W30 has two purposes, it looks common but in fact it is full of murderous intentions. Black has two cut points 'a' and 'b', and can not take care of both simultaneously.];B[jd]
(;W[fh]LB[ee:a][df:b][ef:c][dg:d][eg:e][ch:f][bf:g][ci:h][eh:i][ae:j]C[Black is in a bitter battle. If White directly pushs at 'a', followed by B 'b', W 'c', B 'd', W 'e', B 'f', W 'g', B 'h' and W 'i', then the diagonal of B 'j' is brilliant, White is about killed. (see var a)];B[gg];W[hg];B[gh]C[It's time for lunch break.]
;W[hh];B[gi];W[ee];B[ef];W[df];B[ej]C[Black cannot help but to sacrifice 5 key stones, Lee Changho has achieved magnificent profit in the first fight of the opening.];W[qf]LB[lc:a][mc:b][jb:c]C[W42 approaching from this side is a play that Lee Changho uses to control the situation under favorable situations. From the current position, White usually invades near 'a' or 'b', because 'c' is the vital point for the shape. But Lee Changho perhaps wants to avoid complications when having an advantage.];B[nc];W[rd]
;B[qg];W[rg];B[rf];W[qh]C[White is favorable in the ladder.];B[pg];W[re];B[gp]C[But B51 as a ladder breaker is a good move.];W[gq];B[rh];W[sf];B[qi];W[co]
;B[dn];W[hp]C[White hanes up firmly, also taking some profit.];B[ph];W[qo]LB[qc:a]C[The diagonal move of 'a' in the upper right corner is enticing, but Lee Changho may fear Black will form a huge moyo in the lower right, so he approaches the lower right corner first to break it up.];B[qc];W[pe]C[White's diagonal move in sente is very happy.];B[oe];W[qd]C[The exchange of B63 and W64 is dubious.];B[qp];W[po]
;B[op];W[pc];B[od];W[ql];B[oo];W[ro];B[iq]C[Black extends along the side at the maximum limit to achieve the biggest profit.];W[ip];B[jp];W[jq];B[kq];W[jr];B[kr]
;W[ir];B[pn];W[rq];B[rm];W[qm];B[rl];W[rk];B[qk];W[qn]LB[om:a][on:b][rj:c][ol:d]C[If W88 jumps to 'a', although 'b' and 'c' are miai, but White may worry Black will connect at 'b', after W 'c', Black can clamp at 'd' to blockade White.]
;B[rp];W[on];B[qq];W[nn]C[Through 92, White is out of trouble.];B[qb];W[pf];B[qj];W[nl]LB[mq:a]C[W96 jump strengthening is solid, White aims to invade at 'a'.];B[bn];W[mq]C[The invasion is very severe, Black is hard to handle.];B[mo]C[B99 is the strongest play.]
;W[no];B[mp];W[lp]C[White's succesive tesujis make Black hard to cope with.];B[np]C[B103 tolerates.];W[kp]C[Lee Changho enters byo-yomi.];B[bp];W[pb];B[jo]C[The extension of B107 is questionable.];W[rj];B[ri];W[lq]C[W110 is a steady and good move, B107 becomes a bad move.]
;B[nq]C[B111 can not be omitted, Black ends in gote.];W[of];B[hi];W[jh];B[ji];W[ki];B[ih];W[ig];B[ii];W[kg];B[kj];W[li];B[lj]
;W[mi];B[mj];W[ok]C[W126 is a good move of ensuring life.];B[jf];W[jg];B[cf];W[dg];B[bg];W[be];B[bf];W[bh]LB[ae:a]C[If White stands at 'a', he can snip off Black's tail cleanly, in the game White selects killing all Black stones because he thinks Black does not have enough ko threats.]
;B[ae];W[ag];B[ci];W[ch];B[ac]C[Black makes a multi-stage ko.];W[ab];B[eh];W[ad];B[nj];W[mm];B[ac];W[di];B[dj]
;W[ad];B[mr];W[lr];B[ac];W[ah];B[bi];W[ad];B[pk];W[pl];B[ac];W[af];B[ce];W[ad]
;B[ep];W[be];B[eq];W[er];B[dr]C[B165 blocks indomitably.];W[mc]LB[dq:a]C[White needs time to calculate variations after the cut at 'a', so he selects to first play at the top to gain time.];B[md];W[ld]
(;B[mb]LB[lc:a][le:b][nb:c][ob:d][ne:e]C[If B169 ataris at 'a', followed by W 169, B 'b', W 'c', B 'd',  then W 'e' is marvellous, Black has no follow-up move. (see var a)];W[lc];B[lb]C[Black has no choice but to cross over on the second line.];W[kc];B[le];W[me];B[nd]C[B175 is a steady and good move.]
;W[ke];B[lf];W[kf];B[kd];W[mf];B[kb];W[sp];B[rr]
(;W[fp]LB[dq:a][fr:b][es:c][fs:d][eo:e][go:f][ds:g][fo:h][do:i][gr:j][hq:k][ho:l][br:m]C[After thinking for a long time gained by forcing moves at the top, finally Lee Changho doesn't dare to cut at 'a', so Black has gained a huge profit, but White is still slightly favorable from the whole board. After study, even White cuts at 'a', the variation is no good for Black. White can kill Black with the good move at 'm'. (see var a)];B[eo]
;W[lg];B[jc];W[ob];B[gn];W[fr];B[ds];W[ha];B[le];W[nr]C[After W194, Black has no chance of winning.];B[jm];W[hn];B[hm];W[go]
;B[fn];W[in];B[im];W[ai];B[aj];W[or];B[ll];W[ko]C[Lee Changho's positional judgement is very accurate, now White is still a little better.];B[sq];W[ib];B[ic];W[jn];B[fb]
;W[pr];B[lm];W[fa];B[ei];W[qr];B[mn];W[ml];B[kn];W[rs];B[so];W[rn];B[sj];W[sm]
;B[sk];W[nh];B[jb];W[ga]C[Through 228, Chang Hao couldn't save the losing game in the end, though fighting vigorously, but Black still does not have enough points to give komi and can only concede defeat. (Zhou Heyang 9p had calculated that Black would lose the game by 4.5 points in the study room, five minutes later, Chang Hao resigned.)])
(;W[dq];B[fr];W[es];B[fs];W[eo];B[fp];W[go];B[ds];W[er];B[es];W[fo];B[er];W[do]
;B[gr];W[hq];B[ho];W[br]C[Black gets killed.]))
(;B[lc];W[mb];B[le];W[nb];B[ob];W[ne]C[Black has no follow-up move.]))
(;W[ee];B[df];W[ef];B[dg];W[eg];B[ch];W[bf];B[ci];W[eh];B[ae]C[White gets killed.]))