(;AB[ba]AB[ca]AB[cb]AB[ea]AB[eb]AB[fb]AB[gb]AB[ga]AB[ec]AB[ei]AB[eh]AB[eg]AB[ef]AB[ee]AB[ed]AB[de]AB[ce]AB[be]AB[ae]AB[bc]AB[bd]AW[ab]AW[cc]AW[cd]AW[ag]AW[bg]AW[cg]AW[ch]AW[dh]AW[di]AW[dj]AW[ej]AW[fi]AW[gi]AW[hj]AW[hk]AW[gl]AW[fk]AB[bh]AB[ai]AB[ci]AB[cj]AB[bj]AB[dk]AB[ek]AB[el]AB[dl]AB[cm]AB[cn]AB[bo]AB[an]AW[ao]AW[ap]AW[bp]AW[cp]AW[dp]AW[fl]AW[em]AW[dm]AW[dn]AW[do]AB[fm]AB[fn]AB[en]AB[gn]AB[eo]AB[fp]AB[fq]AW[ep]AW[eq]AW[dq]AB[bn]AB[cl]AW[co]AW[fr]AW[er]AW[es]AW[ds]AW[cr]AW[bq]AB[ar]AB[br]AB[bs]AB[cs]AB[fs]AB[gs]AB[gr]AB[hr]AB[iq]AB[jq]AB[jr]AB[kr]AB[is]AW[ls]AW[ks]AB[js]AW[lr]AW[go]AW[gp]AW[gq]AW[hq]AW[ip]AW[io]AB[ho]AW[gm]AB[jn]AW[hn]AW[hm]AW[hl]AB[in]AB[im]AB[il]AB[jl]AB[ik]AB[kn]AB[jo]AW[jp]AW[kp]AW[kq]AW[lq]AW[ko]AW[mr]AW[nq]AW[oq]AW[or]AW[os]AW[ns]AW[hi]AW[ij]AW[jj]AW[jk]AW[kj]AB[ii]AB[ji]AB[ki]AW[ih]AW[ha]AW[hb]AW[ib]AW[ic]AW[id]AW[if]AW[ig]AW[ie]AW[gc]AW[fc]AW[ff]AW[fg]AW[fh]AW[fe]AB[fd]AW[gd]AB[lj]AB[lk]AB[kk]AW[kl]AB[lo]AB[lp]AB[mp]AB[mq]AB[np]AB[op]AB[oo]AB[on]AB[pn]AB[qn]AB[qm]AB[pl]AB[ol]AB[nk]AB[nj]AB[mi]AB[mh]AB[kh]AB[jh]AB[jg]AB[kf]AB[je]AB[kd]AB[jc]AB[jb]AB[ld]AB[le]AB[lf]AB[mf]AB[nf]AB[og]AB[oh]AB[oe]AB[pf]AB[pd]AB[qd]AB[qc]AB[rb]AB[ra]AB[qa]AB[rh]AB[ri]AB[qi]AB[pi]AB[pj]AB[qj]AB[qp]AB[pq]AB[pr]AB[ps]AB[qq]AB[rq]AB[rr]AB[rs]AW[pp]AW[po]AW[qo]AW[ro]AW[rp]AW[so]AW[sp]AW[sr]AW[ss]AW[sq]AW[rn]AW[ql]AW[qk]AW[rk]AW[rj]AW[rm]AW[pk]AW[ok]AW[oj]AW[oi]AW[ni]AW[nh]AW[ng]AW[mg]AW[kg]AW[lg]AW[lb]AW[lc]AW[ma]AW[na]AW[qb]AW[pc]AW[pb]AW[ob]AW[oc]AW[od]AW[me]AW[md]AW[nd]AW[ne]AW[nc]AB[sl]AB[sm]AW[sk]AB[sj]TR[ss]C[White is up by about 12 right now. However, he accidentally played the marked stone. Black to play and win.]AW[qh]AW[ph]AB[oa]AB[ja]AP[goproblems]
(;B[lh];W[si]
(;B[sh]
(;W[qs]
(;B[sj];W[qr];B[rl]C[RIGHT])
(;B[rl];W[sn];B[sl];W[qr]))
(;W[rl]C[CHOICE];B[sj];W[sn]
(;B[sl];W[si]
(;B[pa]
(;W[mb];B[sj];W[rc]
(;B[sm];W[sb]C[RIGHT])
(;B[rd];W[si]C[Oups, no threat])))
(;B[mb];W[pa];B[sj];W[rc];B[sm];W[sc]C[RIGHT]))
(;B[sm];W[si];B[pa];W[mb];B[sj];W[ka];B[sl]C[RIGHT])))
(;B[rl];W[sn])
(;B[qg];W[rl];B[sh];W[qr];B[sj];W[qs])
(;B[sn];W[rl];B[sm];W[qr]))
(;B[rl];W[sn];B[sl];W[si];B[rl];W[sm];B[rl];W[sl];B[sh];W[qr])
(;B[si];W[rg]C[Oups.]))