invalid problem set
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life and death
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Problem | 8951 |
Created | 2006-07-27 |
Name | k65 |
Source | |
Rating | |
Difficulty | 5.2 dan |
Average Solve Time | 43 secs |
User Attempts |
160 / 1282 |
Solve Ratio Rating | 2 dan |
| rating history |
ko is not a solution
(;AB[bq]AB[bp]AB[cp]AB[dp]AB[ep]AB[gp]AB[hq]AB[gr]AW[br]AW[cq]AW[dq]AW[dr]AW[fr]AB[ir]C[black to kill]AP[goproblems]
(;B[cs]
(;W[ar]C[CHOICE]
(;B[fs]
(;W[es]C[CHOICE]
(;B[eq];W[bs]
(;B[er];W[gs];B[ds]C[RIGHT])
(;B[ds];W[er]))
(;B[ds];W[eq]C[ko])
(;B[fq];W[bs])
(;B[bs];W[eq]C[this leads to a ko fight]
(;B[gs];W[fq];B[ds];W[cr]C[ko])
(;B[fq];W[gs];B[hs];W[ds]C[ko])))
(;W[bs];B[ds]C[RIGHT]))
(;B[bs]
(;W[eq]
(;B[es];W[fs])
(;B[ds];W[fs])
(;B[fs];W[es]
(;B[gs];W[fq];B[ds];W[cr]C[ko])
(;B[fq];W[gs];B[hs];W[ds]C[ko]))
(;B[fq]C[];W[fs]C[thanks to blyx for this var]
(;B[cr];W[ds])
(;B[gs];W[ds])
(;B[er];W[ds])
(;B[ds];W[cr])))
(;W[fs]
(;B[er];W[eq];B[fq];W[ds])
(;B[fq];W[er]
(;B[ds];W[cr])
(;B[cr];W[ds]))
(;B[ds];W[eq]
(;B[fq];W[cr])
(;B[gs];W[fq]))))
(;B[ds];W[eq]
(;B[fs];W[es]C[ko])
(;B[es];W[fs])
(;B[bs];W[fs]
(;B[fq])
(;B[gs];W[fq])))
(;B[cr];W[bs])
(;B[eq];W[er]
(;B[fs];W[bs])
(;B[bs];W[fs]))
(;B[es];W[fs])
(;B[fq];W[ds]))
(;W[bs];B[fs];W[es];B[eq];W[ar]
(;B[er];W[gs];B[ds]C[RIGHT])
(;B[ds];W[er])))
(;B[ar];W[cs])
(;B[eq];W[cs])
(;B[es];W[ar]
(;B[ds];W[fs])
(;B[fs];W[ds])
(;B[cs];W[fs])
(;B[bs];W[ds]))
(;B[fs];W[es]
(;B[cs];W[eq]C[ko])
(;B[eq];W[cs]
(;B[er];W[ar]C[ko])
(;B[ar];W[er]C[ko]))
(;B[ar];W[cs]))
(;B[bs];W[cs]C[a2 - ko])
(;B[fq];W[cs])
(;B[er];W[eq]))
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