Problem | 21996 |
Created | 2018-07-07 |
Name | Q27 第二å七番 |
Source | Original (オリジナル) |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 44 secs |
User Attempts |
11 / 98 |
Solve Ratio Rating | 3 dan |
| rating history |
27. Ko problem (黒先劫).
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])))
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