(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[7.50]
PW[Gan Siyang]PB[jinshe007]WR[2p]BR[9d]DT[2006-05-18]EV[1st position cup on Tom server]RE[W+Resign]
;B[qd]C[This is the game from the 1st position cup on Tom server. Black is "jinshe007", 9-dan, White is Gan Siyang, 2-dan professional]
;W[fp]
;B[dc]
;W[pn]
;B[ce]
;W[od]
;B[oc]
;W[nc]
;B[pc]
;W[db]
;B[eb]
;W[ec]
;B[ed]
;W[fc]
;B[fb]
;W[gc]
;B[gb]
;W[hc]
;B[cc]
;W[nd]LB[nf:A][ng:B]C[The standard pattern, but now White may think about the jump at A or B. It will work better with his high stones]
;B[qf]
;W[jc]
;B[do]LB[dn:A][np:B]TR[pn][fp]C[Now the marked stones looks strange. At least, it's better to have them at A and B instead]
(;W[dp]C[A rare answer -]
;B[cp]
;W[cq]
;B[bq]
(;W[co]C[The most active answer -]
;B[bp]
;W[cn]
(;B[dq]C[The right decision -]
;W[ep]
;B[dr]
;W[dj]LB[em:A][en:B]C[Usually White defends at A or B, but it's not typical for Gan Siyang, 2-dan to play passively]
;B[op]LB[dn:A]C[A careful move. Black may start the battle directly by escaping at A]
;W[pp]
;B[pq]
;W[qq]
(;B[or]C[A good decision -]
;W[qr]
;B[po]
;W[qp]
(;B[on]C[This shape has a bad adji -]
;W[qo]
;B[pm]
;W[oo]
;B[no]
;W[om]
;B[po]
;W[qn]
(;B[nn]LB[pl:A]C[Black may think about extending at A, but ... -]
;W[ol]C[Black lost some territory on the right]
;B[ip]LB[jp:A][jq:B]C[This move is not careful enough. It's better to put it at A or B]
;W[nq]
(;B[oq]C[The answer is risky -]
;W[kp]C[Suddenly Black's position becomes thin]
;B[ko]
;W[lo]
;B[kn]
;W[jp]
;B[io]
;W[iq]
;B[hq]
;W[jr]
;B[ir]
;W[jq]
;B[gp]
;W[ln]
;B[lm]
;W[jo]
;B[km]
;W[jn]C[Black's attack failed]
;B[gn]
;W[en]
;B[fq]
;W[jm]
;B[nm]LB[ml:A]C[It's probably better to defend at A]
;W[mp]
;B[kk]
;W[jl]
(;B[oj]C[Black's plan is risky -]
;W[nk]
;B[lk]
;W[nj]C[Black's group becomes very weak]
;B[ij]
;W[ml]C[It's probably better to skip this exchange]
;B[mm]
;W[gl]
(;B[ki]LB[li:A]C[Black may also defend at A -]
;W[ni]
;B[dm]
;W[dn]
(;B[qi]C[A huge move -]
;W[gj]
;B[kg]LB[ih:A]C[Is it better to jump at A?]
;W[pe]
;B[qe]LB[qg:A]C[It's more solid to defend at A]
;W[pg]C[A painful peep]
(;B[qh]C[Too passive! -]
;W[jh]
;B[kh]
;W[jk]
;B[ng]
;W[mh]
;B[mg]LB[jj:A]C[Is it better to block at A first?]
;W[jj]C[Now Black's group is very weak]
;B[mi]
;W[nh]
;B[og]
;W[kj]
;B[li]
;W[pf]
;B[mk]
;W[lf]
;B[lg]
;W[ph]C[How can Black save it?]
;B[je]
;W[kd]
;B[ig]
;W[ji]
;B[jg]
;W[hf]
(;B[if]C[The order looks wrong -]
;W[nl]C[A sharp move in reverse sente]
;B[hg]
;W[gf]
;B[gg]
;W[ff]
;B[fg]
;W[df]
;B[fi]LB[eg:A]C[A is the vital point here]
;W[eg]C[Black missed it]
;B[gi]
;W[eh]
;B[ei]
;W[di]
;B[fk]
;W[gk]
;B[fl]
;W[fm]
;B[dk]
;W[gm]
;B[ck]
;W[ej]
;B[fj]
;W[bl]C[Now the group looks dead]
;B[em]
;W[cl]
;B[ek]
;W[dl]
;B[ee]
;W[ef]
;B[le]
;W[kf]
;B[ke]
;W[ld]
;B[he]
;W[ge]
;B[lq]
;W[nr]
;B[bi]
;W[bg]
;B[fn]
;W[hn]
;B[bk]
;W[mf]
;B[me]
;W[nf]
;B[oh]
;W[oi]
;B[el]
;W[go]
;B[bn]
;W[cm]
;B[id]
;W[ic]
;B[pi]
;W[ch]
;B[of]
;W[ne]
;B[pd]
;W[oe]
;B[mq]
;W[np]
;B[ql]
;W[qk]
;B[rk]
;W[rl]LB[pk:A][pl:B]TR[id][he][je][ke][le][me][if][of][fg][gg][hg][ig][jg][kg][lg][mg][ng][og][kh][oh][bi][ei][fi][gi][ki][li][mi][fj][bk][ck][dk][ek][fk][kk][lk][mk][el][fl][em][km][lm][mm][nm][kn][nn][on][ko][no][po][op][oq][pq][or]C[A nice tesuji. If Black plays at A, White would make the atari at B.
Gan Siyang, 2-dan played a very impressive game! He killed one of the largest groups in Go history!])
(;B[nl]
(;W[if]
;B[ok]
;W[pl]
;B[ql]
;W[qm]
;B[pk]
;W[pm]
;B[oh]C[Black's move at O8 is sente])
(;W[ok]
;B[if]
;W[kf]
;B[hg]C[Now Black has an eye and the task of saving this group is easier])))
(;B[pf]
;W[of]
;B[og]
;W[ph]
;B[nf]
;W[oe]
;B[qh]C[This is the right order]))
(;B[kg]
;W[qh]C[Black has no time to defend the central group]))
(;B[li]
;W[oi]
;B[jh]C[The shape would be very flexible]))
(;B[nk]C[This is the only move]))
(;B[mq]
;W[oq]
;B[nr]C[This is the most solid way]))
(;B[pl]
;W[oo]
;B[nn]
;W[np]
;B[po]
;W[cb]
;B[bb]
;W[oo]
;B[oq]
;W[mp]C[... the ko fight would be risky for him]))
(;B[oo]
;W[qo]
;B[kq]C[This one would be more solid]))
(;B[qr]
;W[oq]
;B[pr]
;W[nq]
;B[qp]
;W[po]
;B[rp]
;W[mo]C[It would be greedy for Black to take another corner]))
(;B[dn]
;W[cm]
;B[ep]
;W[dq]
;B[eq]
;W[er]
;B[fq]
;W[fr]
;B[gq]
;W[br]C[Black can sacrifice the corner, but his wall would be useless]))
(;W[dq]
;B[bo]
;W[eo]
;B[dn]C[This result is too good for Black]))
(;W[dq]
;B[cq]
;W[cr]
;B[cp]
;W[er]
;B[dl]
;W[pq]
;B[kq]C[This is the normal way, but it looks comfortable for Black]))

