Problem | 15450 |
Created | 2011-12-09 |
Name | Solve this |
Source | Ma own brain |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 162 secs |
User Attempts |
11 / 115 |
Solve Ratio Rating | 3 dan |
| rating history |
Can black kill white's e4 group? If you think so prove it.
(;AB[bq]AW[ar]AW[aq]AW[ap]AW[ao]AW[an]AW[am]AB[bp]AB[bo]AB[bn]AB[cr]AB[dr]AB[er]AB[fr]AW[bs]AW[cs]AW[ds]AW[fs]AW[es]AB[eq]AW[gs]AB[dp]AB[do]AB[fp]AW[ep]AW[eo]AW[fo]AW[fn]AB[en]AB[ak]AB[aj]AB[ai]AW[bl]AB[bd]AW[cn]AW[dm]AW[bh]AW[ba]AW[cb]AW[ac]AW[ad]AW[ag]AW[gb]AW[ha]AW[ia]AW[ka]AW[la]AW[na]AW[oa]AW[qa]AW[ra]AW[pc]AW[sd]AW[se]AW[sf]AW[sh]AW[rh]AW[ri]AW[sj]AW[ss]AW[js]AW[ns]AW[io]AW[hk]AW[gj]AW[ii]AW[op]AW[np]AW[pq]AW[sq]AW[sp]AW[rn]AB[ga]AB[ea]AB[jb]AB[kd]AB[nb]AB[re]AB[rf]AB[rg]AB[qi]AB[hj]AB[jj]AB[il]AB[nm]AB[lp]AB[pn]AB[qo]AB[hp]AB[go]AB[em]AB[fm]AW[gn]AB[hn]AW[jp]AW[gm]LB[ff:No]AP[goproblems]
(;B[fm];W[gn];B[hn];W[gm];B[gl];W[hm]
(;B[im];W[hl];B[gk];W[ik];B[ij];W[jk];B[kk];W[jl];B[jm];W[kl];B[ll];W[km];B[kn];W[lm]
(;B[mm];W[ln];B[lo];W[mn];B[mo];W[nn];B[no];W[on];B[oo];W[om];B[ol];W[pm];B[qm];W[pl];B[pk];W[ql];B[rl];W[qk];B[qj];W[rk];B[rj];W[sk];B[sl];W[si]
(;B[sg];W[qh];B[ph];W[qg]
(;B[qf];W[pg];B[og];W[pf];B[pe];W[of];B[nf];W[oe];B[od];W[ne];B[me];W[nd];B[nc];W[md]
(;B[ld];W[mc];B[mb];W[lc];B[lb];W[kc]
(;B[jc];W[kb];B[ma];W[ja];B[hb];W[fa];B[ib];W[ga];B[gc];W[fb];B[eb];W[fc];B[fd];W[ec];B[dc];W[ed];B[ee];W[dd];B[cd];W[de];B[df];W[ce];B[be];W[cf];B[cg];W[bf];B[bg];W[af];B[ae];W[ah];B[ch];W[bi];B[bj];W[ci];B[di];W[cj];B[ck];W[dj];B[ej];W[dk];B[dl];W[ek]
(;B[el];W[fk];B[fj];W[fl]
(;B[gk];W[gl];B[gk]C[RIGHT])
(;B[gl];W[gk];B[gi]C[RIGHT]))
(;B[fk];W[el]
(;B[fl]C[RIGHT])
(;B[cl]C[RIGHT])))
(;B[kb];W[jc];B[ic];W[jd];B[je];W[id];B[hd];W[ie];B[if];W[he];B[ge];W[hf];B[hg];W[gf];B[ff];W[gg];B[gh];W[fg];B[eg];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dj];B[dk];W[cj];B[bj];W[ck];B[cl];W[bk];B[bm];W[al];B[br];W[as];B[hs];W[gr];B[gq];W[hr];B[ir];W[is];B[hq];W[hs];B[jr];W[ks];B[ls];W[kr];B[kq];W[lr];B[mr];W[ms];B[lq];W[ls];B[nr];W[os];B[or];W[ps];B[pr];W[qs];B[qr];W[rs];B[sr];W[rr];B[rq];W[sr]
(;B[rp];W[so]
(;B[ro];W[sn])
(;B[sn];W[sm];B[ro];W[rm]))
(;B[so];W[rp];B[ro];W[qp];B[pp];W[po])))
(;B[mc];W[ld];B[le];W[lc];B[lb];W[kc];B[kb];W[jc];B[ic];W[jd];B[je];W[id];B[hd];W[ie];B[if];W[ke];B[he];W[jf]))
(;B[pg];W[qf];B[qe];W[pf];B[of];W[pe];B[pd];W[oe];B[ne];W[od]))
(;B[qh];W[sg];B[rd];W[sc];B[rc];W[sb];B[rb];W[sa];B[qb];W[pa]))
(;B[ln];W[mm];B[ml];W[mn];B[mo];W[nn];B[no];W[on];B[oo];W[om];B[ol];W[pm];B[qm];W[pl];B[pk];W[nl];B[ql];W[ok]))
(;B[hl];W[im];B[in];W[jm]))
(;B[ff])
(;B[gl];W[hm]
(;B[im];W[hl];B[gk];W[ik];B[ij];W[jk];B[kk];W[jl];B[jm];W[kl];B[ll];W[km];B[kn];W[lm]
(;B[mm];W[ln];B[lo];W[mn];B[mo];W[nn];B[no];W[on];B[oo];W[om];B[ol];W[pm];B[qm];W[pl];B[pk];W[ql];B[rl];W[qk];B[qj];W[rk];B[rj];W[sk];B[sl];W[si]
(;B[sg];W[qh];B[ph];W[qg]
(;B[qf];W[pg];B[og];W[pf];B[pe];W[of];B[nf];W[oe];B[od];W[ne];B[me];W[nd];B[nc];W[md]
(;B[ld];W[mc];B[mb];W[lc];B[lb];W[kc]
(;B[jc];W[kb];B[ma];W[ja];B[hb];W[fa];B[ib];W[ga];B[gc];W[fb];B[eb];W[fc];B[fd];W[ec];B[dc];W[ed];B[ee];W[dd];B[cd];W[de];B[df];W[ce];B[be];W[cf];B[cg];W[bf];B[bg];W[af];B[ae];W[ah];B[ch];W[bi];B[bj];W[ci];B[di];W[cj];B[ck];W[dj];B[ej];W[dk];B[dl];W[ek]
(;B[el];W[fk];B[fj];W[fl]
(;B[gk];W[gl];B[gk]C[RIGHT])
(;B[gl];W[gk];B[gi]C[RIGHT]))
(;B[fk];W[el]
(;B[fl]C[RIGHT])
(;B[cl]C[RIGHT])))
(;B[kb];W[jc];B[ic];W[jd];B[je];W[id];B[hd];W[ie];B[if];W[he];B[ge];W[hf];B[hg];W[gf];B[ff];W[gg];B[gh];W[fg];B[eg];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dj];B[dk];W[cj];B[bj];W[ck];B[cl];W[bk];B[bm];W[al];B[br];W[as];B[hs];W[gr];B[gq];W[hr];B[ir];W[is];B[hq];W[hs];B[jr];W[ks];B[ls];W[kr];B[kq];W[lr];B[mr];W[ms];B[lq];W[ls];B[nr];W[os];B[or];W[ps];B[pr];W[qs];B[qr];W[rs];B[sr];W[rr];B[rq];W[sr]
(;B[rp];W[so]
(;B[ro];W[sn])
(;B[sn];W[sm];B[ro];W[rm]))
(;B[so];W[rp];B[ro];W[qp];B[pp];W[po])))
(;B[mc];W[ld];B[le];W[lc];B[lb];W[kc];B[kb];W[jc];B[ic];W[jd];B[je];W[id];B[hd];W[ie];B[if];W[ke];B[he];W[jf]))
(;B[pg];W[qf];B[qe];W[pf];B[of];W[pe];B[pd];W[oe];B[ne];W[od]))
(;B[qh];W[sg];B[rd];W[sc];B[rc];W[sb];B[rb];W[sa];B[qb];W[pa]))
(;B[ln];W[mm];B[ml];W[mn];B[mo];W[nn];B[no];W[on];B[oo];W[om];B[ol];W[pm];B[qm];W[pl];B[pk];W[nl];B[ql];W[ok]))
(;B[hl];W[im];B[in];W[jm])))
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