invalid problem set
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life and death
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Problem | 8499 |
Created | 2006-05-02 |
Name | k23 |
Source | dashnet |
Rating | |
Difficulty | 7 dan |
Average Solve Time | 63 secs |
User Attempts |
169 / 1222 |
Solve Ratio Rating | 2 dan |
| rating history |
Ko is not a kill
(;AB[cq]AB[cn]AB[bn]AB[an]AB[ao]AB[do]AB[eo]AB[ep]AB[eq]AB[gp]AB[fr]AB[gr]AB[gs]AW[ap]AW[bp]AW[bo]AW[dp]AW[dq]AW[cr]AW[er]AW[es]AW[fs]C[Black to kill]AP[goproblems]
(;B[dr]
(;W[ds]C[]
(;B[cp]
(;W[bq]C[]
(;B[dr]
(;W[ar]C[]
(;B[bs]
(;W[dq]C[]
(;B[br]C[CHOICERIGHT])
(;B[cs];W[dr]))
(;W[br];B[cs]C[RIGHT]))
(;B[cs];W[bs]C[ko]))
(;W[dq];B[ar]
(;W[bs];B[br]C[RIGHT])
(;W[br];B[bs]C[RIGHT])))
(;B[co];W[bs])
(;B[br];W[co]))
(;W[br];B[bq]
(;W[ar];B[bs]C[RIGHT])
(;W[aq];B[dr];W[dq];B[bs]C[RIGHT])))
(;B[bs];W[cp];B[cs];W[dr]))
(;W[cp];B[cs];W[br];B[bs]C[RIGHT]))
(;B[br];W[bq])
(;B[cp];W[bq]
(;B[dr];W[ar]
(;B[cs];W[bs]C[ko])
(;B[bs];W[cs]))
(;B[co];W[ar]))
(;B[bq];W[cp])
(;B[cs];W[dr]
(;B[bq];W[cp];B[br];W[ar])
(;B[cp];W[bq]
(;B[br];W[co])
(;B[co];W[bs])))
(;B[bs];W[bq])
(;B[ar];W[bq])
(;B[ds];W[dr]
(;B[cp];W[bq])
(;B[bq];W[cp])))
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