Problem 17795 goproblems.com


Author	inspere	Created	2014-06-24
Difficulty	9 dan (history)	Source	Gengen Gokyo collection
AVG solve time	83 sec	Stars	3.67 (3 votes)
User attempts	3 / 156	Collections	Xuan Xuan Qijing
Genre	life and death	Your attempts	N/A
Similar problems
Created	2014-06-24
Source	Gengen Gokyo collection
Stars	3.67 (3 votes)
Collections	Xuan Xuan Qijing
Your attempts	N/A

(;AB[qb]AB[pb]AB[pc]AB[od]AB[nd]AB[nc]AB[nb]AB[mb]AB[oe]AB[pe]AB[qf]AB[rf]AB[pf]AB[pg]AB[oh]AB[nh]AB[ni]AB[qj]AB[ho]AB[gp]AB[fq]AB[eq]AB[dq]AB[cq]AB[cr]AB[br]AB[ar]AB[co]AW[bo]AW[cp]AW[bq]AW[aq]AW[do]AW[dn]AW[ep]AW[fp]AW[gq]AW[gr]AW[iq]AW[kq]AW[oj]AW[oi]AW[ph]AW[qi]AW[qg]AW[rg]AW[sf]AW[re]AW[qe]AW[qd]AW[pd]AW[qc]AW[rb]AW[ra]AW[mc]AW[md]AW[ne]AW[me]AW[mg]AW[ng]AW[og]AW[lb]AW[kc]C[White will resist all your attempts to save both of your groups as well as your attempts to attack his own group 'cause he can't see what you can. Take advantage of his greed and save both black groups unconditionally. Don't play any unnecessary moves.]AP[goproblems] (;B[rc];W[sc] (;B[qa];W[ds] (;B[fr];W[fs] (;B[es];W[er] (;B[hq];W[hr] (;B[gs];W[hs] (;B[dr];W[es] (;B[cs];W[gs] (;B[go];W[dp];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[hp];B[go];W[dp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!]))) (;B[go];W[dp] (;B[cs];W[gs];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[cs] (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!]) (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]))) (;B[ir];W[hp] (;B[go];W[dp] (;B[cs];W[gs] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[is];W[cs]C[];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs];B[go];W[dp]))) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[ir];W[cs];B[dr];W[es] (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]) (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[bs]C[Black can do much better!])) (;B[ir];W[cs];B[dr]) (;B[cs];W[es];B[dr];W[gs] (;B[go];W[dp];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[hp];B[go];W[dp]))) (;B[dr];W[gs]C[Ko! Black can do much better!]) (;B[cs];W[gs]C[Black can do much better!]) (;B[ir];W[gs]C[Black can do much better!]) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[cs];W[bs]C[Black can do much better!]))) (;B[gs];W[hs] (;B[hq];W[ir]C[Black can do much better!]) (;B[dr];W[es];B[cs];W[gs];B[hq];W[ir]C[Black can do much better!])) (;B[dr];W[gs] (;B[es]C[Ko! Black can do much better!]) (;B[cs];W[es];B[hq];W[hr]C[];B[ir];W[hp];B[go];W[dp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs];B[dr];W[es];B[hq];W[hr]C[];B[ir];W[hp];B[go];W[dp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[hq];W[hr] (;B[es];W[er] (;B[gs];W[hs] (;B[dr];W[es] (;B[cs];W[gs] (;B[go];W[dp];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[hp];B[go];W[dp])) (;B[go];W[dp] (;B[cs];W[gs]) (;B[ir];W[cs] (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!]) (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]))) (;B[ir];W[hp] (;B[go];W[dp] (;B[cs];W[gs]) (;B[is];W[cs]C[];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs]))) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[ir];W[cs];B[dr];W[es] (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]) (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[bs]C[Black can do much better!])) (;B[ir];W[cs];B[dr]) (;B[cs];W[es];B[dr])) (;B[dr];W[gs]C[Ko! Black can do much better!]) (;B[cs];W[gs]C[Black can do much better!]) (;B[ir];W[gs]C[Black can do much better!]) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[cs];W[bs]C[Black can do much better!]))) (;B[gs];W[es]C[Black can do much better!]) (;B[go];W[dp];B[es];W[er];B[dr];W[cs]C[Ko! Black can do much better!])) (;B[go];W[dp];B[hq];W[hr];B[es];W[er];B[dr];W[cs]C[Ko! Black can do much better!]) (;B[gs];W[es];B[hq];W[hr]C[Black can do much better!]) (;B[dr];W[es]C[Black can do much better!]) (;B[cs];W[es]C[Black can do much better!])) (;B[hq];W[hr] (;B[fr];W[fs] (;B[es];W[er]) (;B[gs];W[es]C[Black can do much better!]) (;B[go];W[dp];B[es];W[er];B[dr];W[cs]C[Ko! Black can do much better!])) (;B[es];W[er];B[fr];W[fs] (;B[gs];W[hs] (;B[dr];W[es] (;B[cs];W[gs] (;B[go];W[dp];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[hp];B[go];W[dp])) (;B[go];W[dp] (;B[cs];W[gs]) (;B[ir];W[cs] (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!]) (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]))) (;B[ir];W[hp] (;B[go];W[dp] (;B[cs];W[gs]) (;B[is];W[cs]C[];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs]))) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[ir];W[cs];B[dr];W[es] (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]) (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[bs]C[Black can do much better!])) (;B[ir];W[cs];B[dr]) (;B[cs];W[es];B[dr])) (;B[dr];W[gs]C[Ko! Black can do much better!]) (;B[cs];W[gs]C[Black can do much better!]) (;B[ir];W[gs]C[Black can do much better!]) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[cs];W[bs]C[Black can do much better!])))) (;B[es];W[er];B[fr];W[fs] (;B[hq];W[hr] (;B[gs];W[hs] (;B[dr];W[es] (;B[cs];W[gs] (;B[go];W[dp];B[ir];W[hp] (;B[is];W[hq];B[jq];W[ip];B[jp];W[io];B[in];W[jo]AB[ko]AW[jn]AB[jm]AW[kn]AB[ln]AW[km]AB[kl]AW[lm]AB[mm]AW[ll]AB[lk]AW[ml]AB[nl]AW[mk];B[mj];W[nk];B[ok];W[nj] (;B[pj];W[pi] (;B[ri];W[qh];B[rh];W[sg] (;B[se];W[sd] (;B[sh];W[se];B[sb]C[If you arrived at the solution by yourself, you're most definitely a top pro!RIGHT]) (;B[sb];W[kp]C[Argh! So close!])) (;B[sd];W[rd];B[sh];W[se]C[Argh! So close!]) (;B[sh];W[se]C[Argh! So close!]) (;B[sb];W[kp]C[Argh! So close!])) (;B[qh];W[ri])) (;B[pi]C[NOTTHIS])) (;B[ip];W[jr];B[hq];W[is]C[You were on the right track though!])) (;B[ir];W[hp];B[go];W[dp])) (;B[go];W[dp] (;B[cs];W[gs]) (;B[ir];W[cs] (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!]) (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]))) (;B[ir];W[hp] (;B[go];W[dp] (;B[cs];W[gs]) (;B[is];W[cs]C[];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs]))) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[ir];W[cs];B[dr];W[es] (;B[ip];W[jq];B[is];W[hp]C[Ko! Black can do much better!]) (;B[is];W[hp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[bs]C[Black can do much better!])) (;B[ir];W[cs];B[dr]) (;B[cs];W[es];B[dr])) (;B[dr];W[gs]C[Ko! Black can do much better!]) (;B[cs];W[gs]C[Black can do much better!]) (;B[ir];W[gs]C[Black can do much better!]) (;B[go];W[dp] (;B[dr];W[cs]C[Ko! Black can do much better!]) (;B[cs];W[bs]C[Black can do much better!]))) (;B[gs];W[hs] (;B[hq];W[ir]C[Black can do much better!]) (;B[dr];W[es];B[cs];W[gs];B[hq];W[ir]C[Black can do much better!])) (;B[dr];W[gs] (;B[es]C[Ko! Black can do much better!]) (;B[cs];W[es];B[hq];W[hr]C[];B[ir];W[hp];B[go];W[dp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[cs];W[gs];B[dr];W[es];B[hq];W[hr]C[];B[ir];W[hp];B[go];W[dp];B[ip];W[jq]C[Ko! Black can do much better!])) (;B[sb]C[NOTTHIS])) (;B[sb]C[NOTTHIS])) (;B[qa];W[ds] (;B[rc];W[sc]) (;B[sc];W[rc];B[sd];W[sb]C[Black can do much better!]) (;B[sd];W[rd];B[sb];W[se]C[Black can do much better!])) (;B[sd];W[rd];B[sb];W[se]C[Black can do much better!]) (;B[sc];W[rc];B[sd];W[sb]C[Black can do much better!]) (;B[fr];W[qa]C[Black can do much better!]) (;B[ds];W[qa]C[Black can do much better!]) (;B[oa];W[ds]C[Black can do much better!]) (;B[ma];W[ds]C[Black can do much better!]) (;B[ob];W[ds]C[Black can do much better!]) (;B[qh]C[NOTTHIS]))