(;SZ[19]PB[Cho Chikun]DT[2003-06-19]PC[Seoul, Korea]KM[6.5]RE[W+R]EV[8th LG Cup]RO[2]BR[9d]PW[Yi Ch'ang-ho]WR[9d]US[JBvR]C[8th LG Cup, Round 2
June 19, 2003
Seoul, Korea
W: Yi (Lee) Changho, 9D
B: Cho Chikun, 9D

This game is from the second round of the 8th LG Cup World Championship. 
Black is Cho Chikun, 9 Dan. White is Yi (Lee) Changho 9 Dan.

Commentary is by Alexandre Dinerchtein 1p .];B[qd];W[dd];B[pq];W[oc];B[dp]
;W[po]
(;B[qo]C[Black 7 is a territorially oriented move. See variation.];W[qn];B[qp];W[pn]
(;B[ld]C[B11: See variation.]
(;W[ph]C[W12: The balance is good. See variation.];B[od]
(;W[nd]C[White 14 shows an active plan. See variation.];B[oe];W[pc];B[qc];W[ne];B[og];W[mf];B[oh];W[pj];B[fc];W[cf]C[W24: White can also fight with the pincer at X (J16).]LB[id:X]
;B[pi];W[qi];B[oi];W[qj];B[lf];W[lg];B[kf];W[mc];B[lc]
(;W[pd]C[White 34 is an agressive idea. See variation.];B[pe];W[qb]
(;B[rb]C[B37: Black has no other way. See variation.];W[qe];B[qf];W[re];B[pb];W[rc];B[qa];W[rd];B[qb];W[ob]
(;B[mg]C[B47: Black cannot fight the ko. See variation.];W[sb];B[lh];W[oa]
(;B[kg]C[Black 51 is urgent. See variation.];W[fd];B[gd]
(;W[ec]C[W54: It is also possible to cut. See variation.];B[fe];W[ed];B[gc]
(;W[ge]C[White 58 is an overplay. See variation.];B[rf];W[pa];B[ff];W[dh];B[fh]C[B63: White loses some points here.];W[he];B[di]C[Black 65 is a risky plan. At X (J17) is the gentle answer.]LB[ic:X];W[ic];B[ib];W[fg]C[White 68 is a wonderful tesuji.]
;B[eg];W[gg];B[eh];W[ef];B[df];W[ee]C[W74: The result is successful for White.];B[cg];W[bf];B[co]
(;W[fq]C[W78: This invasion is too close to the thickness. See variation.];B[hq]
(;W[dn]C[White 80 is another interesting plan. See variation.];B[fp];W[cn];B[cl]C[B83: It is probably better to defend solidly at X (E3).]LB[eq:X];W[dj];B[cj];W[cq]C[W86: This invasion is painful for Black.];B[cp];W[gp];B[fo];W[dq]
;B[gq];W[eq];B[ep]C[B93: Black's shape is ugly.];W[bq];B[nq];W[mo]C[W96: Now the game is slightly favorable for White.];B[ho]C[Black 97 is a solid move.];W[ci];B[ei];W[gn];B[fn]C[Black 101 is an overplay.]
;W[go];B[hp];W[bn]C[W104: Now the aji (latent potential) is really bad for Black.];B[dk];W[bp]C[W106: White is happy to connect these stones.];B[ln]C[B107: This is Black's last chance is to make a moyo.];W[op];B[mr];W[lo];B[mn]C[Black 111 is the strongest answer.];W[ro]
;B[rp];W[pf];B[of];W[rh];B[pg];W[oq];B[or];W[em];B[fm];W[jb];B[jc];W[jd];B[kc]
;W[hb];B[id]
(;W[ia]C[White 128 is a dangerous move. See variation.];B[hd];W[ie];B[eb];W[ke];B[jf];W[je];B[db];W[kb];B[cd]C[B137: The trade is bad for White.];W[de];B[bd]
;W[le];B[dg];W[ce];B[ol]C[B143: Now the game is unclear.];W[pl];B[gh];W[cc];B[cb];W[hg];B[dc];W[el];B[fl];W[ek]
;B[ej];W[fk];B[gk];W[np];B[nm];W[gj];B[hk];W[mq];B[nr];W[hc];B[ga];W[gb];B[fb]
;W[bc];B[ac];W[bb];B[ba];W[kn]C[White 170 is a brave move. The game would be really close if 
White pushes at X (L5) instead.]LB[ko:X];B[ko]C[B171: Black has no other way.];W[pr];B[qr];W[nk];B[ok];W[oj]
;B[nj];W[ik];B[ij];W[jn];B[jo];W[mj];B[ni];W[ml]
(;B[km]C[Black 185 is the losing move. See variation.];W[jm];B[kl];W[be];B[ab];W[jj];B[il];W[lm]
(;B[nl]C[B193: Black is tricked. See variation.];W[jl];B[kk];W[jk];B[mk];W[ii]C[Black resigns.])
(;B[jl];W[nn];B[mm];W[om];B[ll];W[pk]C[Black cannot keep the moyo.]))
(;B[lk];W[mk];B[lm];W[ll];B[km]C[This is the correct way to solve the problem.]))
(;W[hc];B[hd];W[ie];B[gb];W[ia];B[ga];W[ha];B[je];W[kb];B[lb];W[ka]C[White cannot find anything better.]))
(;W[hp];B[iq];W[fo]C[This is the standard shape. It would be difficult for Black toattack 
this group.]))
(;W[hq];B[jq];W[er];B[dq];W[ho]C[This is the normal way to invade.]))
(;W[oq];B[or];W[pp];B[qq];W[nq];B[nr];W[lq]C[This is the most important place on the board.]))
(;W[gc]
(;B[eb]C[See variation.];W[ec];B[fb];W[db];B[cc];W[dc];B[fe];W[ed];B[hc];W[ge];B[hd];W[ff]C[Black's position would be overconcentrated.]
)
(;B[ed];W[fe];B[ec];W[ee];B[hc];W[gb];B[hb];W[ge];B[hd];W[dc];B[fb];W[eb];B[ga]
;W[cn];B[fq];W[dk]C[This result would also be favorable for White.])))
(;B[nq];W[dn];B[kg];W[fp]C[The ladder breaker would be painful for Black.]))
(;B[rf];W[sb];B[se];W[ra];B[sa];W[pf];B[of];W[ra];B[de];W[pa];B[ce];W[qh]C[Black's group would be in trouble.]))
(;B[qf];W[rb]C[This position would be too comfortable for White.]))
(;W[mh];B[qg];W[gd]C[This is the simple way.]))
(;W[oq];B[or];W[pp];B[qq];W[nq];B[nr];W[lq];B[pc]C[This opening is also playable.]))
(;W[of];B[qg];W[ph];B[qh];W[pi];B[qi];W[pj];B[qj];W[pk];B[hc]C[The marked white thickness (Q6, R6, Q5) would be useless.]TR[po][pn][qn]
))
(;B[nq];W[qg];B[pe];W[pj];B[pc];W[od];B[pb];W[kc]C[This opening would be interesting for White.]))
(;B[ld];W[of];B[qg]C[This is the standard opening.]))