invalid problem set
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life and death
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Problem | 8509 |
Created | 2006-05-05 |
Name | k28 |
Source | dashnet |
Rating | |
Difficulty | 1.9 dan |
Average Solve Time | 76 secs |
User Attempts |
311 / 1649 |
Solve Ratio Rating | 1 kyu |
| rating history |
ko is not a solution
(;AB[er]AB[eq]AB[ep]AB[eo]AB[en]AB[dq]AB[dn]AB[cn]AB[bn]AB[bl]AW[an]AW[bo]AW[co]AW[do]AW[dp]AW[cq]AW[dr]C[Black to kill]AP[goproblems]
(;B[br];W[cr]
(;B[bq]
(;W[bs]C[]
(;B[bp]
(;W[cp]
(;B[ar]
(;W[ap]C[]
(;B[ds]C[CHOICERIGHT])
(;B[aq];W[as])
(;B[am];W[ds]C[ko]))
(;W[ds]
(;B[ap]C[RIGHT])
(;B[aq];W[ao])
(;B[ao];W[ap])))
(;B[ds];W[ar])
(;B[aq];W[ds]
(;B[ao];W[ap]C[ko])
(;B[ar])
(;B[ap];W[ao]))
(;B[ap];W[ar]))
(;W[ar];B[cp]C[RIGHT]))
(;B[ap];W[bp];B[am];W[ar])
(;B[ar];W[bp]
(;B[ds];W[ap])
(;B[ap];W[cs];B[am];W[as])
(;B[cs];W[ap];B[as];W[aq]))
(;B[aq];W[bp])
(;B[ds];W[bp];B[ar]))
(;W[bp];B[bs];W[cs];B[es];W[aq];B[ds]C[RIGHT]))
(;B[bs];W[bq])
(;B[ds];W[bs]
(;B[bq])
(;B[ar];W[bq]))
(;B[bp];W[bq];B[aq];W[cp])
(;B[cs];W[ds]
(;B[bp];W[bq])
(;B[bq];W[bs])))
(;B[cr];W[br]
(;B[ds];W[bp])
(;B[bq];W[cs];B[bp];W[aq];B[ap];W[ao];B[ar];W[cp])
(;B[cs];W[bp]))
(;B[ds];W[cr]
(;B[br])
(;B[cs];W[bs]
(;B[br];W[es])
(;B[es];W[bq])
(;B[bq];W[br];B[bp];W[cp];B[ar];W[es];B[ds];W[ap]))
(;B[bs];W[cs]
(;B[bq];W[br])
(;B[br];W[bq])
(;B[bp];W[bq])
(;B[ar];W[bq]))
(;B[bp];W[bq])
(;B[bq];W[bp])
(;B[ap];W[bp]))
(;B[bs];W[cr]
(;B[br])
(;B[ds])
(;B[bq];W[br])
(;B[bp];W[bq])
(;B[ar];W[bq]))
(;B[cs];W[br]
(;B[ds];W[bp])
(;B[bp];W[bq]))
(;B[bp];W[bq]
(;B[ds];W[cr])
(;B[ap];W[aq])
(;B[cr];W[br]))
(;B[bq];W[br]
(;B[bp];W[aq]
(;B[ap];W[ar])
(;B[ds];W[cr]))
(;B[ds];W[bp])
(;B[ap];W[bp]))
(;B[ap];W[bp]))
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