Problem	21996
Created	2018-07-07
Name	Q27 第二十七番
Source
Rating

Difficulty	8 dan
Average Solve Time	42 secs
User Attempts	12 / 99
Solve Ratio Rating	2 dan
	rating history

Ko problem

Difficulty level 2 at mimura15.jp

(;AB[cr]AB[bq]AB[cp]AW[dq]AW[co]AW[do]AW[eo]AW[bn]AW[cm]AW[gp]AW[gq]AW[gr]AW[ir]AP[goproblems] (;B[dr];W[bs] (;B[eq];W[er] (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT]) (;B[es]C[RIGHT];W[fr]) (;B[fq]C[NOTTHISRIGHT]) (;B[fr]C[NOTTHISRIGHT])) (;B[fr];W[es] (;B[fs];W[fq] (;B[ds];W[er] (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT])) (;B[dp]C[NOTTHISRIGHT]) (;B[cq]C[NOTTHISRIGHT])) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[ds]C[NOTTHISRIGHT]) (;B[cq]C[NOTTHISRIGHT])) (;B[cq]C[NOTTHISRIGHT])) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT]) (;B[ds]C[NOTTHISRIGHT]) (;B[fq]C[NOTTHISRIGHT]) (;B[fs]C[NOTTHISRIGHT])) (;B[ds];W[fq] (;B[fs];W[er] (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT])) (;B[dp]C[NOTTHISRIGHT]) (;B[cq]C[NOTTHISRIGHT])) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT]) (;B[fs]C[NOTTHISRIGHT])) (;B[dp]C[NOTTHISRIGHT]) (;B[cq]C[NOTTHISRIGHT])) (;B[fq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT]) (;B[cq]C[NOTTHISRIGHT])) (;B[es];W[fr] (;B[dp];W[ep];B[bo];W[ao];B[ap]C[RIGHT]) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[dp];W[ep]))) (;B[cq]C[NOTTHISRIGHT]) (;B[dp]C[NOTTHISRIGHT]) (;B[fq]C[NOTTHISRIGHT])) (;B[ap];W[bo];B[bp];W[ar] (;B[fr];W[er];B[eq];W[es];B[fs];W[fq];B[ds];W[er]) (;B[eq];W[er];B[fr];W[es];B[fs];W[fq];B[ds];W[er])) (;B[ar];W[bp]) (;B[bo];W[cq] (;B[br];W[es] (;B[ao];W[bp];B[ap];W[ar]) (;B[ar];W[ap]) (;B[ap];W[ar])) (;B[ap];W[er] (;B[br];W[ar];B[eq];W[dp];B[fr];W[es] (;B[fs];W[fq];B[ds];W[er]) (;B[ds];W[fq];B[fs];W[er])) (;B[ar];W[br];B[eq];W[dp];B[fr];W[es];B[fs];W[fq];B[ds];W[er]) (;B[eq];W[dp] (;B[br];W[ar];B[fr];W[es] (;B[fs];W[fq];B[ds];W[er]) (;B[ds];W[fq];B[fs])) (;B[ar];W[br];B[fr];W[es];B[fs];W[fq];B[ds];W[er]) (;B[fr];W[es] (;B[br];W[ar] (;B[fs];W[fq];B[ds];W[er]) (;B[ds];W[fq];B[fs])) (;B[ar];W[br];B[fs];W[fq];B[ds];W[er]) (;B[fs];W[fq] (;B[ds];W[er] (;B[br];W[ar]) (;B[ar];W[br])) (;B[br];W[ar];B[ds];W[er]) (;B[ar];W[br];B[ds];W[er])) (;B[ds];W[fq] (;B[fs];W[er] (;B[br];W[ar]) (;B[ar];W[br])) (;B[br];W[ar];B[fs]) (;B[ar];W[br];B[fs];W[er])))))) (;B[er];W[bp]) (;B[es];W[er] (;B[eq];W[fr] (;B[dp];W[ep];B[bo];W[ao];B[ap]C[RIGHT]) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[dp];W[ep];B[ap]C[RIGHT]))) (;B[bo];W[ao] (;B[ap]C[RIGHT]) (;B[eq];W[fr] (;B[ap]C[RIGHT]) (;B[dp];W[ep])))) (;B[fr] (;W[dp];B[er];W[fs] (;B[ap];W[cq];B[bo];W[bp]) (;B[bo];W[cq];B[ap];W[bp])) (;W[cq];B[ap];W[dp];B[er];W[fs];B[bo];W[bp]))) (;B[bs];W[ar] (;B[bo];W[dr]) (;B[dr];W[bp] (;B[aq];W[ds] (;B[es];W[er];B[eq];W[fr];B[dp];W[ep]) (;B[eq];W[es] (;B[dp];W[ep] (;B[cq];W[er]) (;B[er];W[cq])) (;B[er];W[dp];B[fs];W[fr])) (;B[er];W[es])) (;B[eq];W[aq]) (;B[ap];W[ds] (;B[bo];W[eq];B[cq];W[an]) (;B[eq];W[es] (;B[bo];W[dp];B[cq];W[an]) (;B[dp];W[bo] (;B[aq];W[ep] (;B[cq];W[er]) (;B[er];W[cq])) (;B[er];W[aq]))) (;B[es];W[er] (;B[bo];W[eq];B[cq];W[an]) (;B[eq];W[fr] (;B[bo];W[dp];B[cq];W[an]) (;B[dp];W[bo] (;B[aq];W[ep]) (;B[ep];W[aq]))))))) (;B[ap];W[ar]) (;B[ar];W[bs] (;B[dr];W[bp]) (;B[bo];W[cs];B[dr];W[ds] (;B[ap];W[es]) (;B[eq];W[es];B[dp];W[ap];B[ao];W[er]) (;B[es];W[er];B[eq];W[fs])) (;B[ap];W[bo] (;B[dr];W[bp]) (;B[bp];W[cs];B[dr];W[ds];B[eq];W[es];B[dp];W[er]))) (;B[bo];W[ar];B[dr];W[es];B[ds];W[bs];B[ao];W[cq] (;B[bp];W[br] (;B[eq];W[dp];B[er];W[an]) (;B[aq];W[er])) (;B[br];W[bp])))