(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]

(;N[9_lee-changho.sgf]
(;B[pd]C[#10]
;W[dp]
;B[pq]
;W[dd]
;B[po]
;W[qj]
;B[fq]
;W[cn]
;B[jp]
;W[qm]
;B[fc]
;W[df]
;B[db]
;W[cc]
;B[ic]
;W[di]
;B[fo]
;W[eq]
;B[fr]
;W[lo]
;B[pk]
;W[qk]
;B[pm]
;W[pl]
;B[ol]
;W[ql]
;B[om]
;W[lq]
;B[kq]
;W[kn]
;B[qn]
;W[qg]
;B[ck]
;W[dl]
;B[ci]
;W[ch]
;B[bh]
;W[bi]
;B[cj]
;W[bg]
;B[dh]
;W[cg]
;B[cl]
;W[cm]
;B[ej]
;W[fk]
;B[gi]
;W[er]
;B[ep]
;W[do]
;B[lp]
;W[mp]
;B[kp]
;W[oq]
;B[mo]
;W[qq]
;B[pr]
;W[qp]
;B[pp]
;W[rn]
;B[qo]
;W[ro]
;B[cr]
;W[dq]
;B[es]
;W[ds]
;B[fs]
;W[dr]
;B[hk]
;W[jk]
;B[hm]
;W[ji]
;B[kj]
;W[ik]
;B[hj]
;W[ii]
;B[qf]
;W[rf]
;B[qe]
;W[re]
;B[rd]
;W[qc]
;B[pc]
;W[jd]
;B[id]
;W[je]
;B[pg]
;W[rg]
;B[kb]
;W[ie]
;B[rc]
;W[md]
;B[qh]
;W[rh]
;B[ld]
;W[le]
;B[lc]
;W[mf]
;B[ne]
;W[nf]
;B[of]
;W[nd]
;B[cb]
;W[ob]
;B[bc]
;W[in]
;B[fm]
;W[hn]
;B[bd]
;W[gp]
;B[fp]
;W[ip]
;B[iq]
;W[hq]
;B[io]
;W[ec]
;B[fb]
;W[gl]
;B[eh]
;W[hr]
;B[hp]
;W[ho]
;B[ip]
;W[go]
;B[en]
;W[gm]
;B[gq]
;W[fn]
;B[gn]
;W[hd]
;B[hc]
;W[fn]
;B[hs]
;W[qr]
;B[qs]
;W[rs]
;B[ps]
;W[is]
;B[gn]
;W[qb]
;B[pb]
;W[fn]
;B[gr]
;W[pa]
;B[nc]
;W[mc]
;B[nb]
;W[mb]
;B[na]
;W[oe]
;B[od]
;W[og]
;B[pe]
;W[ph]
;B[gn]
;W[pf]
;B[fn]
;W[oe]
;B[qd]
;W[nk]
;B[ok]
;W[ml]
;B[nl]
;W[hl]
;B[jn]
;W[im]
;B[nj]
;W[mk]
;B[oi]
;W[mn]
;B[no]
;W[mj]
;B[mi]
;W[li]
;B[mh]
;W[nn]
;B[on]
;W[bl]
;B[bk]
;W[bm]
;B[ef]
;W[be]
;B[lh]
;W[cd]
;B[jm]
;W[jl]
;B[km]
;W[lm]
;B[kl]
;W[kk]
;B[rr]
;W[rq]
;B[ko]
;W[ln]
;B[ss]
;W[ll]
;B[sq]
;W[rp]
;B[of]
;W[bb]
;B[ab]
;W[oe]
;B[jo]
;W[kh]
;B[kg]
;W[jh]
;B[of]
;W[ba]
;B[ca]
;W[oe]
;B[lg]
;W[np]
;B[oo]
;W[ff]
;B[eg]
;W[kr]
;B[jr]
;W[mr]
;B[nr]
;W[gs]
;B[ir]
;W[ee]
;B[fg]
;W[ek]
;B[aj]
;W[ai]
;B[gf]
;W[nh]
;B[ni]
;W[ge]
;B[gd]
;W[he]
;B[fe]
;W[fd]
;B[ed]
;W[or]
;B[os]
;W[fd]
;B[gc]
;W[ff]
;B[hh]
;W[eb]
;B[ea]
;W[jc]
;B[jb]
;W[gg]
;B[gh]
;W[hf]
;B[fj]
;W[lb]
;B[kc]
;W[me]
;B[pi]
;W[pj]
;B[oj]
;W[qi]
;B[sp]
;W[ka]
;B[ja]
;W[nm]
;B[hg]
;W[gf]
;B[rm]
;W[rl]
;B[jg]
;W[kd]
;B[la]
;W[ib]
;B[ma]
;W[ad]
;B[aa]
;W[bb]
;B[ba]
;W[ae]
;B[ac]C[Paek Seongho (B) vs Kim Sujang

B is ahead, but he missed a tesuji ]
;W[ga]
(;B[hb]
;W[fa]C[Big ko fight now])
(;B[fa]
;W[ia]
;B[ka]
;W[hb]C[Now it's seki]))
(;B[pd]C[#9]
;W[cq]
;B[pp]
;W[dc]
;B[ce]
;W[dh]
;B[df]
;W[cd]
;B[bd]
;W[bc]
;B[dd]
;W[cc]
;B[ed]
;W[fc]
;B[fp]
;W[dn]
;B[jp]
;W[qn]
;B[np]
;W[rp]
;B[qq]
;W[qk]
;B[fn]
;W[el]
;B[cj]
;W[cg]
;B[ej]
;W[fh]
;B[fd]
;W[gc]
;B[gd]
;W[hd]
;B[he]
;W[ie]
;B[hf]
;W[hh]
;B[if]
;W[id]
;B[cl]
;W[fj]
;B[fk]
;W[dj]
;B[ek]
;W[dk]
;B[dl]
;W[di]
;B[em]
;W[jf]
;B[jg]
;W[ig]
;B[ff]
;W[gk]
;B[fl]
;W[cf]
;B[bf]
;W[jh]
;B[kg]
;W[kh]
;B[je]
;W[kf]
;B[lg]
;W[ke]
;B[ec]
;W[eb]
;B[ac]
;W[cb]
;B[bh]
;W[bg]
;B[ag]
;W[ck]
;B[bk]
;W[bj]
;B[aj]
;W[ci]
;B[dg]
;W[ch]
;B[bi]
;W[bl]
;B[cj]
;W[ah]
;B[ai]
;W[bj]
;B[hc]
;W[ak]
;B[hb]
;W[jc]
;B[fb]
;W[mf]
;B[qf]
;W[fr]
;B[lh]
;W[mc]
;B[lj]
;W[pb]
;B[qi]
;W[rq]
;B[ik]
;W[ph]
;B[qh]
;W[li]
;B[mi]
;W[ki]
;B[nh]
;W[kj]
;B[lk]
;W[kk]
;B[kl]
;W[jl]
;B[qm]
;W[pm]
;B[ll]
;W[oq]
;B[op]
;W[on]
;B[jk]
;W[ab]
;B[ba]
;W[qr]
;B[pr]
;W[pq]
;B[qp]
;W[or]
;B[rr]
;W[ps]
;B[ro]
;W[sr]
;B[rs]
;W[qs]
;B[qo]
;W[rn]
;B[sn]
;W[rm]
;B[nq]
;W[nr]
;B[rj]
;W[mm]
;B[mo]
;W[nk]
;B[ii]TR[ab][cb][eb][bc][cc][dc][cd]C[Takagawa Shukaku (B) vs Sakata Eio

White's group in the corner looks dead, but he has a tesuji ]
;W[ga]
;B[gb]
;W[fa]
(;B[ha]
;W[da]C[Now it's a direct ko])
(;B[da]C[This would be seki.]
;W[ea]
;B[ha]
;W[db]
;B[ca]
;W[ad]
;B[be])))
(;N[tesuji-best.sgf]
;B[pd]C[#8]
;W[dp]
;B[qp]
;W[dc]
;B[de]
;W[ce]
;B[dd]
;W[cd]
;B[ec]
;W[cc]
;B[df]
;W[cg]
;B[oq]
;W[qj]
;B[ql]
;W[qg]
;B[mc]
;W[rd]
;B[fd]
;W[jq]
;B[fq]
;W[eq]
;B[fp]
;W[dn]
;B[lq]
;W[hq]
;B[go]
;W[jn]
;B[hm]
;W[jl]
;B[ik]
;W[jk]
;B[ij]
;W[ki]
;B[qc]
;W[kc]
;B[rf]
;W[qf]
;B[re]
;W[qe]
;B[qd]
;W[rg]
;B[rc]
;W[dk]
;B[cq]
;W[dr]
;B[co]
;W[do]
;B[bn]
;W[cp]
;B[bp]
;W[br]
;B[cl]
;W[dl]
;B[ck]
;W[ih]
;B[ip]
;W[jp]
;B[iq]
;W[ir]
;B[hp]
;W[hr]
;B[io]
;W[jo]
;B[bq]
;W[fr]
;B[gj]
;W[gh]
;B[ic]
;W[gl]
;B[fl]
;W[gm]
;B[il]
;W[fk]
;B[gk]
;W[fm]
;B[fi]
;W[eg]
;B[ei]
;W[dh]
;B[el]C[Cho Hunhyun (B) vs Wang Lei

Yosu-miru, which helps to save the big group]
(;W[em]
;B[hl]
;W[hi]
;B[hj]
;W[hn]
;B[in]
;W[gn]
;B[ej]
;W[ek]
;B[ci]
;W[cj]
;B[bj]
;W[dj]
;B[di]
;W[bi]
;B[ak]
;W[bh]
;B[dg]
(;W[ch]
;B[fg]C[B can live and save everything])
(;W[eh]
;B[ch]
;W[cf]
;B[fh]
;W[fg]
;B[gg]C[W cannot escape]))
(;W[ek]
;B[hl]LB[gn:A]C[A is sente, so this group is alive]))
(;N[3_leech.sgf]
(;B[pd]C[#7]
;W[dc]
;B[dp]
;W[pq]
;B[ce]
;W[fd]
;B[ci]
;W[cg]
;B[qo]
;W[np]
;B[qk]
;W[qm]
;B[fq]
;W[df]
;B[kp]
;W[pn]
;B[cc]
;W[cb]
;B[dd]
;W[bc]
;B[bd]
;W[cd]
;B[qq]
;W[pp]
;B[qp]
;W[qr]
;B[rr]
;W[pr]
;B[cc]
;W[ed]
;B[de]
;W[ee]
;B[bb]
;W[cd]
;B[po]
;W[oo]
;B[cc]
;W[ep]
;B[db]
;W[eq]
;B[dq]
;W[dr]
;B[eo]
;W[fp]
;B[cr]
;W[fr]
;B[ds]
;W[er]
;B[do]
;W[rm]
;B[jd]
;W[fg]
;B[dk]
;W[ip]
;B[qh]
;W[jn]
;B[pc]
;W[nl]
;B[mp]
;W[mq]
;B[lq]
;W[mr]
;B[iq]
;W[hp]
;B[ln]
;W[kl]
;B[nn]
;W[mo]
;B[lo]
;W[lp]
;B[km]
;W[jl]
;B[ll]
;W[lk]
;B[jm]
;W[im]
;B[in]
;W[ml]
;B[mp]
;W[em]
;B[on]
;W[lp]
;B[mn]
;W[pl]
;B[no]
;W[op]
;B[mp]
;W[cm]
;B[hn]
;W[gn]
;B[fn]
;W[fm]
;B[gm]
;W[go]
;B[bn]
;W[bm]
;B[fk]
;W[gl]
;B[hm]
;W[fl]
;B[fi]
;W[il]
;B[jo]
;W[br]
;B[bq]
;W[bs]
;B[am]
;W[al]
;B[an]
;W[bk]
;B[cs]
;W[gk]
;B[gh]
;W[ie]
;B[ih]
;W[hi]
;B[gg]
;W[id]
;B[jf]
;W[je]
;B[kf]
;W[ke]
;B[lf]
;W[md]
;B[me]
;W[ec]
;B[ca]
;W[nd]
;B[ne]
;W[le]
;B[ng]
;W[oh]
;B[pk]
;W[nh]
;B[pg]
;W[og]
;B[of]
;W[mg]
;B[mf]
;W[nf]
;B[oe]
;W[lm]
;B[kn]
;W[ol]
;B[lr]
;W[nr]
;B[hr]
;W[hq]
;B[ir]
;W[gs]
;B[rl]
;W[sm]
;B[nb]
;W[mb]
;B[lb]
;W[mc]
;B[ma]
;W[ob]
;B[oc]
;W[nc]
;B[na]
;W[kc]
;B[fb]
;W[kb]
;B[pb]
;W[eb]
;B[ea]
;W[gb]
;B[cn]
;W[rj]
;B[qj]
;W[ri]
;B[rk]
;W[qi]
;B[pi]
;W[ph]
;B[qg]
;W[sl]
;B[sk]
;W[oi]
;B[pj]
;W[ck]
;B[dl]
;W[dm]
;B[lh]
;W[ej]
;B[bf]
;W[bg]
;B[ei]
;W[dj]
;B[ga]
;W[hb]
;B[fj]
;W[di]
;B[dh]
;W[ek]
;B[ch]
;W[eg]
;B[eh]
;W[jh]
;B[ig]
;W[rh]
;B[rg]
;W[oj]
;B[sh]
;W[lg]
;B[ji]
;W[ok]
;B[si]
;W[kg]
;B[ii]
;W[ki]
;B[cj]
;W[el]
;B[ge]
;W[fc]
;B[ff]
;W[ef]
;B[cf]
;W[dg]
;B[fa]
;W[ha]
;B[da]
;W[lc]
;B[la]
;W[ka]
;B[oa]
;W[es]
;B[cq]
;W[gi]
;B[fh]
;W[kj]
;B[gd]
;W[gc]
;B[jg]
;W[kh]
;B[gr]
;W[gq]
;B[or]C[Cho Chikun (B) vs Kato Masao
Brilliant endgame tesuji!]
(;W[oq]
;B[os]
;W[ns]LB[ps:A]C[Real game. Black got 1 extra point here, because W has to add a stone later at A])
(;W[os]
;B[sq]
;W[rs]
;B[qs]
;W[ps]
;B[ms]C[W has to add a stone again]))
(;B[pd]C[#6]
;W[dp]
;B[pp]
;W[dc]
;B[de]
;W[dh]
;B[gd]
;W[fe]
;B[ed]
;W[fd]
;B[ec]
;W[fc]
;B[fb]
;W[db]
;B[eb]
;W[gc]
;B[cd]
;W[cf]
;B[df]
;W[dg]
;B[bf]
;W[bg]
;B[ce]
;W[jp]
;B[cn]
;W[bo]
;B[dk]
;W[en]
;B[gk]
;W[ef]
;B[er]
;W[fq]
;B[eq]
;W[ep]
;B[fr]
;W[gq]
;B[bq]
;W[bp]
;B[cq]
;W[gi]
;B[dn]
;W[cp]
;B[em]
;W[fm]
;B[el]
;W[fn]
;B[gr]
;W[hr]
;B[ir]
;W[hq]
;B[kq]
;W[hk]
;B[hl]
;W[fl]
;B[bn]
;W[fk]
;B[bj]
;W[bi]
;B[cj]
;W[np]
;B[aq]
;W[kp]
;B[pn]
;W[pq]
;B[qq]
;W[oq]
;B[qr]
;W[nm]
;B[hs]
;W[nd]
;B[of]
;W[mf]
;B[lq]
;W[jr]
;B[lp]
;W[jq]
;B[ln]
;W[mo]
;B[lo]
;W[ml]
;B[ll]
;W[lk]
;B[lm]
;W[oo]
;B[kk]
;W[lj]
;B[kj]
;W[ki]
;B[ji]
;W[kh]
;B[ij]
;W[il]
;B[ik]
;W[jl]
;B[kl]
;W[hi]
;B[jh]
;W[jg]
;B[nr]
;W[or]
;B[kr]
;W[js]
;B[mr]
;W[po]
;B[qo]
;W[ls]
;B[li]
;W[nj]
;B[kg]
;W[lh]
;B[ig]
;W[jf]
;B[if]
;W[je]
;B[ie]
;W[jd]
;B[jm]
;W[im]
;B[jn]
;W[ih]
;B[ii]
;W[hh]
;B[ol]
;W[mi]
;B[hj]
;W[qf]
;B[nc]
;W[mc]
;B[od]
;W[nb]
;B[oc]
;W[rd]
;B[ob]
;W[mb]
;B[re]
;W[qe]
;B[rc]
;W[rf]
;B[ne]
;W[md]
;B[qi]
;W[ph]
;B[pi]
;W[oh]
;B[qh]
;W[pg]
;B[qd]
;W[se]
;B[qb]
;W[pm]
;B[on]
;W[om]
;B[qm]
;W[nn]
;B[pl]
;W[qn]
;B[rn]
;W[gb]
;B[cg]
;W[ch]
;B[ei]
;W[eh]
;B[in]
;W[ej]
;B[hm]
;W[bc]
;B[bd]
;W[bb]
;B[cc]
;W[cb]
;B[ac]
;W[ab]
;B[ad]
;W[pn]
;B[rl]
;W[dj]
;B[go]
;W[fo]
;B[ng]
;W[me]
;B[rh]
;W[bl]
;B[cl]
;W[al]
;B[bk]
;W[an]
;B[bm]
;W[am]
;B[dm]
;W[ae]
;B[af]
;W[ba]
;B[da]
;W[ea]
;B[ga]
;W[ha]C[Jang Dujin(B) vs Heo Janghoi]
(;B[fa]C[B played here and got a ko in the corner
It looks natural, but it's the losing plan]
;W[hb]
;B[dd]
;W[ee]
;B[ea]
;W[cf])
(;B[hb]
;W[ia]
;B[ib]
;W[ja]
;B[kb]
;W[fa]
;B[ga]
;W[fa]
;B[ea]C[Now B can easily win the semeai in the corner]))
(;B[qd]C[#5]
;W[dc]
;B[dq]
;W[pp]
;B[ce]
;W[ed]
;B[ch]
;W[nc]
;B[pc]
;W[kc]
;B[co]
;W[iq]
;B[nq]
;W[lq]
;B[pn]
;W[pq]
;B[no]
;W[mp]
;B[np]
;W[on]
;B[oo]
;W[po]
;B[pm]
;W[om]
;B[ol]
;W[nm]
;B[kp]
;W[nl]
;B[pl]
;W[mo]
;B[qo]
;W[qp]
;B[ro]
;W[or]
;B[rp]
;W[mn]
;B[qr]
;W[mr]
;B[gq]
;W[id]
;B[hf]
;W[df]
;B[cf]
;W[dg]
;B[dh]
;W[eh]
;B[ei]
;W[fh]
;B[ff]
;W[fi]
;B[ej]
;W[fj]
;B[ek]
;W[ge]
;B[gl]
;W[ij]
;B[ne]
;W[ph]
;B[qi]
;W[mg]
;B[le]
;W[kf]
;B[lc]
;W[lb]
;B[jd]
;W[jc]
;B[mc]
;W[mb]
;B[je]
;W[pe]
;B[od]
;W[qe]
;B[nb]
;W[ob]
;B[oc]
;W[na]
;B[ie]
;W[hd]
;B[lf]
;W[lg]
;B[kg]
;W[kh]
;B[jg]
;W[jh]
;B[hn]
;W[ig]
;B[pb]
;W[cg]
;B[bg]
;W[bh]
;B[bi]
;W[bf]
;B[ah]
;W[be]
;B[ir]
;W[hr]
;B[hq]
;W[jr]
;B[ip]
;W[is]
;B[jq]
;W[oj]
;B[qh]
;W[pg]
;B[pj]
;W[ir]
;B[gr]
;W[pi]
;B[cd]
;W[bd]
;B[gf]
;W[de]
;B[pr]
;W[oq]
;B[jl]
;W[qj]
;B[rj]
;W[pk]
;B[rk]
;W[jf]
;B[re]
;W[rf]
;B[rc]
;W[se]
;B[rd]
;W[gs]
;B[fr]
;W[rr]
;B[rq]
;W[qq]
;B[rs]C[White An Choyeong 7p
Lee Changho 9p]
(;W[sr]C[W was on byoyomi, so he decided to get time to think by playing useless sente move, without any damage -]
(;B[qs]C[Tesuji!
An, 7p missed this answer
Black's goal here - sente]
(;W[os]
;B[kk]LB[ps:A]C[Now B has sente, so he can get a key point

White can of course play at A, which he did later in the game.
This will gain him 3 points.
But black gained sente.
He got sente in exchange for 3 points.]
;W[il]
;B[jm]
;W[ps]
;B[sq]
;W[ss]
;B[qr]C[Finally B won by 0.5
]
;W[pa]
;B[qb]
;W[lj]
;B[kj]
;W[fk]
;B[fl]
;W[im]
;B[in])
(;W[kk]
;B[nr]
;W[ns]
;B[os]
;W[ps]
;B[cc]C[W cannot win the ko - so many ko threats in this corner]))
(;B[sq]
;W[kk]C[W ahead!]))
(;W[kk]C[W would be clearly ahead in this case])))
(;N[5_An-Sungjoon_Lee-Sedol.sgf]
(;B[qd]C[#4]
;W[dd]
;B[pp]
;W[dq]
;B[fc]
;W[df]
;B[ck]
;W[ci]
;B[co]
;W[ec]C[White: Lee Sedol
Black: An Sungjoon]
(;B[ce]C[Probe -]
(;W[fd]
;B[fe]LB[gd:B][de:A]C[Brilliant tesuji!
It makes miai: A-B]
;W[ed]C[Best answer]
;B[oc]
;W[jd]
;B[qj]LB[cc:A][gd:B]C[Black's fuseki is successful now. White's corner looks big, but he has bad aji inside, like A or B]
;W[nq]
;B[pn]
;W[qq]
;B[pq]
;W[pr]
;B[or]
;W[qr]
;B[oq]
;W[ro]
;B[rn]
;W[qo]
;B[qn]
;W[nr]
;B[ns]
;W[cm]
;B[eo]
;W[fp]
;B[hp]
;W[fo]
;B[en]
;W[fn]
;B[dl]
;W[jp]
;B[hn]
;W[ho]
;B[io]
;W[ip]
;B[go]
;W[hq]
;B[kn]
;W[cp]
;B[bo]
;W[fm]
;B[lp]
;W[cf]
;B[ld]
;W[pi]
;B[qi]
;W[mh]
;B[ph]
;W[kh]
;B[gd]
;W[pc]
;B[pd]
;W[ob]
;B[pb]
;W[nc]
;B[od]
;W[lc]
;B[lg]
;W[kj]
;B[jf]
;W[kd]
;B[le]
;W[ie]
;B[ji]
;W[jj]
;B[ki]
;W[lj]
;B[li]
;W[ij]
;B[mj]
;W[mk]
;B[nk]
;W[dm]
;B[em]
;W[el]
;B[cl]
;W[bm]
;B[ek]
;W[fl]
;B[bl]
;W[bp]
;B[an]
;W[hg]
;B[mi]
;W[ps]
;B[os]
;W[lq]
;B[hc]
;W[ib]
;B[eb]
;W[db]
;B[gb]
;W[ea]
;B[fa]
;W[fb]
;B[so]
;W[ga]
;B[rs]
;W[mp]
;B[lo]
;W[po]
;B[oo]
;W[qp]
;B[nn]
;W[sp]
;B[sn]
;W[sr]
;B[kq]
;W[lr]
;B[jq]
;W[kr]
;B[iq]
;W[hr]
;B[hh]
;W[gh]
;B[hi]
;W[ig]
;B[gi]
;W[fh]
;B[hk]
;W[nb]
;B[jh]
;W[hl]
;B[il]
;W[gk]
;B[hj]
;W[bj]
;B[di]
;W[ej]
;B[dj]
;W[fj]
;B[ak]
;W[bk]
;B[bi]
;W[bh]
;B[do]
;W[ap]
;B[ch]
;W[ai])
(;W[cd]
;B[fd]
;W[id]
;B[eb]
;W[db]
;B[ed]
;W[dc]LB[de:A]C[Here Black has a great possibility of playing at A (later)
So, probe is clearly successful])
(;W[de]
;B[cc]
;W[eb]
;B[bf]C[Here Black can just live inside and sacrifice F17]))
(;B[fd]
;W[id]C[Heavy for B to fight here directly]))
(;B[qd]C[#3]
;W[dc]
;B[pq]
;W[cq]
;B[oc]
;W[qo]
;B[pl]
;W[pn]
;B[qp]
;W[rp]
;B[rq]
;W[pp]
;B[qq]
;W[op]
;B[nq]
;W[ce]
;B[nl]
;W[mo]
;B[mq]
;W[qj]
;B[qm]
;W[qg]
;B[ic]
;W[lp]
;B[of]
;W[pe]
;B[oe]
;W[pd]
;B[pc]
;W[od]
;B[nd]
;W[pf]
;B[pg]
;W[og]
;B[ph]
;W[qf]
;B[qh]
;W[qc]
;B[qb]
;W[rc]
;B[nc]
;W[rh]
;B[ri]
;W[rg]
;B[qi]
;W[oi]
;B[oh]
;W[ng]
;B[mf]
;W[nh]
;B[rj]
;W[rb]
;B[nn]
;W[no]
;B[on]
;W[jd]
;B[id]
;W[lh]
;B[kf]
;W[je]
;B[jg]
;W[ie]
;B[kb]
;W[ji]
;B[hg]
;W[ge]
;B[ko]
;W[jq]
;B[ip]
;W[hr]
;B[hq]
;W[jp]
;B[jo]LB[lq:B][gr:A]C[Sakata vs Fujisawa. White to play

A-B are miai. Seems that White is in trouble]
(;W[mr]C[Brilliant tesuji!]
(;B[lq]C[Real game:]
;W[oq]
;B[nr]
;W[or]
;B[oo]
;W[ro]
;B[kp]
;W[po]C[W got big corner and can be satisfied])
(;B[nr]
;W[iq]
;B[hp]
;W[gr]
;B[kp]
;W[lq]C[Now W is connected!]))
(;W[lq]
;B[gr]
;W[ir]
;B[fq]C[So painful for W to live like this])))
(;N[2_chochikun.sgf]
(;B[pd]C[#2]
;W[dd]
;B[pp]
;W[dp]
;B[pj]
;W[nc]
;B[nd]C[Black: Cho Chikun
White: Kobayashi Satoru
Extremely rare in pro games in san-ren-sei]
;W[od]C[It's easy for W to play hane from the other side.
]
(;B[oe]C[Black has no choice, because the ladder is good for W -]
;W[oc]
(;B[pc]C[It's dangerous! -]
;W[pe]
;B[qe]
;W[pf]
;B[md]C[Now it's a big fight]
;W[qd]
;B[qc]
;W[ne]
;B[of]
;W[me]
;B[le]
;W[og]
;B[nf]
;W[mf]
;B[ng]
;W[lf]C[White's move makes miai: 2 ladders -]
(;B[kg]C[It's a great tesuji, which prevents both ladders at the same time!
It seems that Kobayashi Satoru, 9p missed it]
;W[kc]
;B[ld]
;W[nh]
;B[mg]
;W[lg]
;B[mh]
;W[lh]
;B[mi]
;W[ke]
;B[kf]
;W[kd]
;B[ki]
;W[lc]
;B[li]
;W[mc]
;B[qj]C[The game is almost hopeless for White now])
(;B[ld]
;W[nh]C[First ladder])
(;B[oh]
;W[ld]
;B[mc]
;W[mb]
;B[lc]
;W[kc]
;B[lb]
;W[kb]
;B[la]
;W[ka]
;B[kd]
;W[ma]
;B[ld]
;W[jd]C[Second one]))
(;B[pe]
;W[pc]
;B[qc]
;W[qb]
;B[rb]
;W[rc]
;B[qd]
;W[ra]
;B[mc]
;W[sb]
;B[nb]
;W[ob]
;B[oa]
;W[pb]
;B[md]TR[pj]C[This is the most common joseki, but marked stone is too close to the thickness]))
(;B[oc]
;W[oe]
;B[pc]
;W[md]C[W can use P16 only in case of good ladder]))
(;B[pd]C[#1]
;W[dp]
;B[pp]
;W[dc]
;B[de]
;W[ce]
;B[cf]
;W[cd]
;B[df]
;W[fc]
;B[dj]
;W[cl]
;B[pj]
;W[nq]
;B[kp]
;W[qq]
;B[qp]
;W[pq]
;B[op]
;W[rq]
;B[np]
;W[mq]
;B[mp]
;W[rp]
;B[ro]
;W[nc]
;B[nd]
;W[md]
;B[ne]
;W[qc]
;B[qd]
;W[pc]
;B[me]
;W[ld]
;B[le]
;W[ke]
;B[kf]
;W[od]
;B[oe]
;W[oc]
;B[rd]
;W[jf]
;B[kg]
;W[je]
;B[jg]
;W[rn]
;B[so]
;W[qk]
;B[qj]
;W[pk]
;B[ok]
;W[ol]
;B[nl]
;W[rj]
;B[ri]
;W[qi]
;B[oj]
;W[qm]
;B[qo]
;W[rh]
;B[rk]C[Kim Sujang (B) vs Lee Donggyu]
(;W[si]C[It looks so natural to take the stone, but it's a big mistake]
;B[rl]C[W cannot escape now]
;W[qf])
(;W[sj]
;B[rl]
;W[rm]
;B[sm]
;W[ql]C[This way W can save everything!]))))
