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life and death
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Problem | 14068 |
Created | 2010-10-26 |
Source | tom.com |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 96 secs |
User Attempts |
31 / 223 |
Solve Ratio Rating | 2 dan |
| rating history |
I am happy to add additional variations. Please help and feel free to make suggestions.
(;AW[ap]AW[bq]AW[cq]AW[dq]AW[er]AW[fs]AB[bp]AB[cp]AB[dp]AB[eq]AB[fq]AB[fr]AB[bn]AB[cm]AB[hr]AB[hp]C[Black to kill white, unconditionally. Since this is possible, all variations that lead to ko are marked wrong.]AP[goproblems]
(;B[dr];W[ds]C[Ko])
(;B[cs];W[bs])
(;B[aq]
(;W[ar]C[CHOICE]
(;B[cr];W[cs]
(;B[bs];W[ds];B[br]C[Well done!RIGHT])
(;B[ds];W[bs];B[dr];W[br];B[es];W[er];B[dr];W[es]))
(;B[bs];W[cr];B[ds];W[es]))
(;W[br];B[cs];W[ds];B[cr]C[RIGHT])
(;W[ds];B[ar];W[br];B[ao]C[RIGHT]))
(;B[cr];W[br]
(;B[dr];W[ds])
(;B[bs];W[dr]
(;B[cs];W[aq])
(;B[ds];W[es];B[cs];W[aq])))
(;B[br];W[cr])
(;B[ds];W[dr]
(;B[br];W[cs])
(;B[bs];W[es];B[aq];W[ar]
(;B[cs];W[cr])
(;B[cr];W[cs])))
(;B[ar];W[aq]
(;B[cr];W[br];B[dr];W[ds])
(;B[br];W[cr]))
(;B[bs];W[br]
(;B[aq];W[ds])
(;B[cr];W[dr]
(;B[cs];W[aq])
(;B[ds];W[es];B[cs];W[aq]))
(;B[cs];W[ds]
(;B[cr];W[aq])
(;B[aq];W[cr];B[gs];W[as]))
(;B[ds];W[cs];B[cr];W[dr]
(;B[aq];W[cs])
(;B[cs];W[aq]))
(;B[dr];W[ds])))
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