(;C[comments by Mok.

3 byoyomi periods

live broadcast]AP[MultiGo:3.9.4]GN[050805mg01-c07.sgf]
EV[1st Korean Price Information Cup, League C]DT[2005-08-05]PB[Song T'ae-kon]BR[7d]
PW[Ch'oe Ch'eol-han]WR[9d]KM[6.5]RE[W+R]US[JBvR]CP[My Friday Night Files]
;B[qd];W[dd]C[sponsors seems to be some sort of IT company

"Korea Price Information"]
;B[pq];W[dp];B[fc];W[cf];B[kc];W[po]C[slightly unusual move, A is more common. In any case, many different moves have beem tried in this position, from A to G]
LB[qk:A][po:B][qn:C][qj:D][pn:E][qo:F][pd:G];B[qm];W[ro]
(;B[om]C[Not a completely new move, but very rare, not a known joseki]
(;W[oq]C[no other games in my database with this move];B[or];W[nq]
(;B[nr];W[mq];B[mr];W[lq];B[qq]C[this sequence was played without much thinking so it must be some sort of joseki. As black can play A here, white must make another move to protect this weak point.]
LB[oo:A]
(;W[no]
(;B[pf]
(;W[pj]
(;B[mm]
(;W[ni];B[lj]C[Mok looked at a number of alternatives for White here, unclear which one he liked]
(;W[ng]C[A or B?]LB[nf:A][ne:B];B[ph]C[takes away most of the eye space white had here]
;W[nk];B[ll];W[lh]C[interesting shape \:-)

];B[ne];W[jh];B[ik];W[hc]C[A and B are miai for B

White shifts the battle scene]
LB[hh:A][jp:B];B[jp]C[in any case harass W]
(;W[ld];B[fq]C[three tenuki's in a row];W[lc]C[four \:-)];B[cn];W[eo];B[cq];W[el]
C[Is this Go Seigen's 21st Century go?

];B[on];W[oo];B[qn];W[qo]
(;B[ck]
(;W[ko];B[jo];W[km];B[im]C[A almost lives for Black, no need to defend directly]
LB[rj:A];W[jl];B[jk];W[il];B[hl];W[hm]C[cut at A will be a problem for Black]LB[hk:A]
;B[gm];W[hn]
(;B[in];W[kl]C[otherwise B might play here soon, followed by A, was the comment. that leaves the question whether black should have played here first...]
LB[kn:A];B[kk];W[gn];B[gl];W[gp];B[gq];W[hp];B[jr]
(;W[kp]C[making eyes, but why didnt Black play here first?];B[dq]C[big connection, but also very urgent to strengthen this group. During the analysis Mok repeatedly pointed to a white move at A here, but he never showed the very large sequence for white that starts with B]
LB[iq:A][jq:B]
(;W[dm]
(;B[ej];W[fk]
(;B[gi]
(;W[cm];B[dg]C[now Black A would kill white]LB[bo:A];W[bn]C[so this is necessary]
;B[fe];W[gj]
(;B[hj];W[hi]C[now Black has problems];B[ii];W[hh];B[ih];W[ig];B[hg];W[gh]
(;B[jg];W[if];B[ji];W[kh];B[hf];W[fi]C[Now B group is in danger after A-C, it really feels like Song (B) has been doing something wrong in this fight]
LB[mk:A][lk:B][qk:C];B[ie];W[jf];B[oj]
(;W[mk];B[lk];W[je]C[so black missed an atari here!];B[df];W[cg];B[ce];W[de]C[the deciding fight]
(;B[cd];W[cc];B[bc];W[dc];B[bb];W[bf];B[ae];W[dh];B[fg];W[ci]C[otherwise a cut at A is killing, B doesnt work, because of the black tesuji E]
LB[ch:A][ci:B][bh:C][bi:D][ag:E];B[eb]C[needs to pick up the white group and defend against A]
LB[fb:A]
(;W[oi];B[qj];W[qk]C[back to what was left here \:-)];B[pk];W[pi]
(;B[rk];W[qi];B[ql];W[he];B[ge];W[hd]
(;B[gb]C[maybe just thought this was bigger];W[oc];B[pc];W[od]
(;B[ob];W[nb];B[pb];W[be];B[bd]
(;W[bp];B[nf]
(;W[rq]C[preparing the sequence?];B[rr];W[hb]C[no\: seems to have enough territory]
;B[lf];W[le];B[mb];W[nc];B[bh]C[byoyomi];W[ch];B[jd]
(;W[id]
(;B[mg];W[mh];B[na];W[lb];B[la];W[mc];B[ri];W[qh];B[rg]C[big sequence, but ...
]
;W[pe];B[qe];W[qf]
(;B[oe];W[qg];B[pd];W[ma];B[rf]C[This wasn't a real ko after W took, if B retakes W at A. So this is the big point.]
LB[ka:A];W[gg];B[gf];W[jq];B[iq];W[kq];B[ip];W[hr];B[hq];W[ir]C[very big for W]
;B[gr];W[kr];B[bq];W[aq];B[ar];W[ap];B[cr];W[gc];B[ee];W[ga]C[also big. black A-D was a possible endgame here]
LB[mb:A][ka:B][ja:C][ha:D];B[fb];W[cb];B[ca];W[oa];B[fm];W[gk];B[hk];W[eg];B[ef]
;W[eh]C[finishes all threats black had here];B[kf];W[kg];B[rp];W[pa];B[qa];W[na]
;B[qb];W[af];B[db];W[lm];B[ml];W[fp];B[mo];W[mp];B[ke];W[kd]C[W+R

no time for analysis after the game, although we do see the two players still discussing the game after the game recorder has left!])
(;B[qg];W[of]))
(;B[kf]
(;W[ke]C[mistake, should be A]LB[kg:A];B[mg];W[mh];B[kg])
(;W[kg];B[mg];W[mh];B[lb];W[ma];B[mc];W[md];B[kb];W[nd];B[ke];W[kd];B[jc];W[mf])))
(;W[ke];B[lb];W[ma];B[jb]))
(;W[iq];B[jq];W[ir];B[lr];W[br]))
(;W[cb];B[ba];W[ca];B[ee];W[af];B[ec];W[ad];B[ed]))
(;B[oe];W[pb];B[qb];W[pd];B[qc];W[pe]))
(;B[nc]C[this doesnt work?]))
(;B[qi];W[rk]))
(;W[ok]C[not here!];B[oi];W[nj];B[qk];W[pi];B[oh];W[pk];B[nh]))
(;B[be];W[ch];B[cc];W[dc];B[cb];W[ef]))
(;W[oi];B[qj]))
(;B[fi];W[ji];B[ij]
(;W[fg];B[if];W[jg];B[gg];W[fh];B[ff];W[ei];B[fj];W[dj];B[gk];W[eh])
(;W[gg];B[hf]
(;W[gf];B[ge])
(;W[eh];B[fh];W[fg];B[eg]))))
(;B[hi]C[seems to be the move that Mok prefered]))
(;W[gj];B[hj];W[fi];B[fj];W[gk];B[hk]C[again with A]LB[em:A]))
(;B[fj];W[gk];B[hk];W[gj];B[em]C[is this better? no follow up was given]))
(;B[cm];W[ej]C[too simple for white]))
(;W[jq];B[iq];W[kq];B[ip];W[hr];B[hq];W[ir];B[gr];W[kr]C[this is big though gote, and it makes the white group to the right alive. However it weakens the other white group, so the time is not yet right for this sequence]))
(;W[lr];B[hq]C[not good for white]))
(;B[kl];W[jm];B[in]C[is this better?]))
(;W[cp];B[dq];W[cl]))
(;B[rq];W[ko]C[or A]LB[jq:A]))
(;W[lr];B[jr]C[this doesn't look like a good way for white to play]))
(;W[mk];B[lk];W[ml];B[ll];W[lm];B[mn];W[km];B[ok])
(;W[qh];B[lh])
(;W[li];B[ki];W[lh];B[mj]))
(;W[mj]C[was given as an alternative to the knight's jump in the game]))
(;B[nj];W[ph]))
(;W[mm];B[nk];W[lk];B[mi]C[Mok seemed to suggest this was good for Black]))
(;B[pi];W[od]))
(;W[nn];B[nm];W[mn]))
(;B[pp];W[oo];B[nr];W[lq];B[rq];W[mn]))
(;W[no];B[mq]))
(;B[np]C[more common];W[on];B[kq];W[pl];B[qp];W[qo];B[pj];W[ql];B[od]C[Also A and B have been tried here]
LB[cn:A][rj:B]))