Problem	15024
Created	2011-07-28
Name	Golden Stone 1
Source
Rating

Difficulty	9 dan
Average Solve Time	78 secs
User Attempts	4 / 115
Solve Ratio Rating	6 dan
	rating history

(;AB[cc]AB[bd]AB[ce]AB[de]AB[ee]AB[ff]AB[gf]AB[hf]AB[hg]AW[be]AW[af]AW[bf]AW[cf]AW[cg]AW[df]AW[ef]AW[eg]AW[fg]AW[gg]AB[gh]AB[gi]AB[eh]AB[fh]AB[dh]AB[ch]AB[ci]AB[bh]AB[bg]AB[ag]AW[ah]AW[ai]AW[bi]AW[cj]AW[ck]AW[bk]AB[dj]AB[dk]AB[dl]AB[el]AW[di]AW[ei]AW[ej]AW[ek]AW[gk]AW[gj]AB[hj]AB[ij]AW[hi]AW[hh]AW[ih]AW[aj]AB[cl]AB[dp]AB[cp]AW[cq]AW[dq]AW[ep]AW[fo]AW[fp]AW[fq]AW[er]AB[fr]AB[gq]AB[gp]AW[qq]AB[pd]TR[ch]C[The marked stone is GOLDEN. You must save it unconditionally - ko is failure.]AP[goproblems] (;B[fk];W[fj];B[gl];W[hk] (;B[hl];W[ik];B[jk];W[il];B[im];W[jl];B[kl];W[jm];B[jn];W[km];B[lm];W[kn];B[ko];W[ln];B[mn];W[lo];B[lp];W[mo];B[no];W[mp];B[mq];W[np];B[op];W[nq];B[nr];W[oq];B[pq];W[or] (;B[pr];W[os] (;B[ps];W[fl] (;B[ns];W[ad] (;B[al];W[bl] (;B[bm];W[cm] (;B[cn];W[dm] (;B[em];W[fm] (;B[en];W[fk];B[fn];W[gm];B[hm];W[gn];B[go];W[hn];B[in];W[ho] (;B[hp];W[io];B[jo];W[ip];B[iq];W[jp];B[kp];W[jq];B[jr];W[kq];B[lq];W[kr] (;B[lr];W[ks] (;B[ls];W[mr] (;B[am];W[bn] (;B[dn];W[cm] (;B[dm];W[an] (;B[cm]C[];W[ms];B[ak]C[];W[fi];B[bj]C[RIGHT]) (;B[bo];W[ms])) (;B[bo];W[ms])) (;B[bo];W[ms])) (;B[ac];W[ms]C[Ko is not good enough!])) (;B[js];W[gr];B[am];W[bn] (;B[dn];W[cm] (;B[dm];W[an] (;B[cm];W[hq];B[ak]C[];W[fi];B[bj]C[RIGHT]) (;B[bo];W[hq])) (;B[bo];W[hq])) (;B[bo];W[hq]))) (;B[ks];W[lr] (;B[mr];W[ms]) (;B[am];W[fi]))) (;B[io];W[hp] (;B[hq];W[ip]) (;B[ip];W[hq]))) (;B[dn];W[fk] (;B[fn];W[gm];B[hm];W[gn];B[go];W[en];B[hn];W[fn]) (;B[am];W[fi] (;B[ak];W[dg]) (;B[fn];W[dg])) (;B[ac];W[fi])) (;B[am];W[en])) (;B[am];W[em])) (;B[dm];W[cn];B[bn];W[dn]) (;B[fm];W[jj] (;B[am];W[bn] (;B[cn];W[ii]) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[am];W[bn];B[cn];W[dm];B[em];W[dn] (;B[en];W[do] (;B[co];W[eo]) (;B[eo];W[co])) (;B[do];W[en]))) (;B[am];W[bm] (;B[an];W[bn] (;B[ao];W[bo] (;B[ap];W[bp]) (;B[bp];W[jj] (;B[ap];W[ak] (;B[ac];W[ii]C[Ko is not good enough!]) (;B[cm];W[ii] (;B[cn];W[fi]) (;B[co];W[fi]) (;B[ac];W[fi])) (;B[co];W[ii] (;B[cn];W[fi]) (;B[cm];W[fi]) (;B[ac];W[fi])) (;B[cn];W[ii] (;B[co];W[fi]) (;B[cm];W[fi]) (;B[ac];W[fi]))) (;B[ac];W[ii]C[Ko is not good enough!]) (;B[cn];W[ii]) (;B[cm];W[ii]) (;B[co];W[ii]))) (;B[bo];W[dn])) (;B[bn];W[cn]))) (;B[ac];W[jj] (;B[ae]C[Ko is not good enough!]) (;B[bl];W[ii]) (;B[al];W[bl] (;B[bm];W[ii]) (;B[am];W[bm];B[an];W[bn];B[ao];W[ak]))) (;B[bl];W[al] (;B[am];W[bm] (;B[ak]C[Ko is not good enough!]) (;B[ac];W[an];B[ae]C[Ko is not good enough!])) (;B[bm];W[jj] (;B[am];W[ii]C[Ko is not good enough!]) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[ac];W[bm];B[ae]C[Ko is not good enough!]))) (;B[fm];W[fi])) (;B[ns];W[fl];B[ps];W[ad] (;B[al];W[bl] (;B[bm];W[cm] (;B[cn];W[dm] (;B[em];W[fm] (;B[en];W[fk];B[fn];W[gm];B[hm];W[gn];B[go];W[hn];B[in];W[ho] (;B[hp];W[io];B[jo];W[ip];B[iq];W[jp];B[kp];W[jq];B[jr];W[kq];B[lq];W[kr] (;B[lr];W[ks] (;B[ls];W[mr] (;B[am];W[bn] (;B[dn];W[cm] (;B[dm];W[an] (;B[cm]C[];W[ms];B[ak]C[];W[fi];B[bj]C[RIGHT]) (;B[bo];W[ms])) (;B[bo];W[ms])) (;B[bo];W[ms])) (;B[ac];W[ms]C[Ko is not good enough!])) (;B[js];W[gr];B[am];W[bn] (;B[dn];W[cm] (;B[dm];W[an] (;B[cm];W[hq];B[ak]C[];W[fi];B[bj]C[RIGHT]) (;B[bo];W[hq])) (;B[bo];W[hq])) (;B[bo];W[hq]))) (;B[ks];W[lr] (;B[mr];W[ms]) (;B[am];W[fi]))) (;B[io];W[hp] (;B[hq];W[ip]) (;B[ip];W[hq]))) (;B[dn];W[fk] (;B[fn];W[gm];B[hm];W[gn];B[go];W[en];B[hn];W[fn]) (;B[am];W[fi] (;B[ak];W[dg]) (;B[fn];W[dg])) (;B[ac];W[fi])) (;B[am];W[en])) (;B[am];W[em])) (;B[dm];W[cn];B[bn];W[dn]) (;B[fm];W[jj] (;B[am];W[bn] (;B[cn];W[ii]) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[am];W[bn];B[cn];W[dm];B[em];W[dn] (;B[en];W[do] (;B[co];W[eo]) (;B[eo];W[co])) (;B[do];W[en]))) (;B[am];W[bm] (;B[an];W[bn] (;B[ao];W[bo] (;B[ap];W[bp]) (;B[bp];W[jj] (;B[ap];W[ak] (;B[ac];W[ii]C[Ko is not good enough!]) (;B[cm];W[ii] (;B[cn];W[fi]) (;B[co];W[fi]) (;B[ac];W[fi])) (;B[co];W[ii] (;B[cn];W[fi]) (;B[cm];W[fi]) (;B[ac];W[fi])) (;B[cn];W[ii] (;B[co];W[fi]) (;B[cm];W[fi]) (;B[ac];W[fi]))) (;B[ac];W[ii]C[Ko is not good enough!]) (;B[cn];W[ii]) (;B[cm];W[ii]) (;B[co];W[ii]))) (;B[bo];W[dn])) (;B[bn];W[cn]))) (;B[ac];W[jj] (;B[ae]C[Ko is not good enough!]) (;B[bl];W[ii]) (;B[al];W[bl] (;B[bm];W[ii]) (;B[am];W[bm];B[an];W[bn];B[ao];W[ak]))) (;B[bl];W[al] (;B[am];W[bm] (;B[ak]C[Ko is not good enough!]) (;B[ac];W[an];B[ae]C[Ko is not good enough!])) (;B[bm];W[jj] (;B[am];W[ii]C[Ko is not good enough!]) (;B[ac];W[ii]C[Ko is not good enough!])) (;B[ac];W[bm];B[ae]C[Ko is not good enough!])))) (;B[os];W[pr];B[qr];W[pp])) (;B[ik];W[hl];B[hm];W[fl] (;B[il];W[gm]) (;B[gm];W[fi]) (;B[fm];W[fi]))) (;B[ad];W[fi]) (;B[ae];W[ad] (;B[ac];W[fi]) (;B[fk];W[fj];B[gl];W[hk];B[hl];W[ik];B[jk];W[jj] (;B[ac];W[ii]C[Ko is not good enough!]) (;B[bl];W[ii]) (;B[al];W[bl] (;B[bm];W[ii];B[am];W[fi]) (;B[am];W[bm];B[an];W[bn];B[ao];W[ak])))) (;B[bl];W[fi]) (;B[al];W[fi]) (;B[fj];W[fk] (;B[ad];W[fi]) (;B[ae];W[ad];B[ac];W[fi]) (;B[jh];W[fi]) (;B[bl];W[fi]) (;B[al];W[fi])) (;B[gl];W[fi]) (;B[fi];W[fj]) (;B[dg];W[fi]) (;B[jh];W[fi]) (;B[ak];W[al]) (;B[fl];W[fi]) (;B[hk];W[fi]))