invalid problem set
Problem | 14928 |
Created | 2011-06-21 |
Source | inspired by problem 14924(sandboxed) |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 62 secs |
User Attempts |
12 / 215 |
Solve Ratio Rating | 5 dan |
| rating history |
both players don't have any external ko threats.
(;AB[bq]AB[dq]AB[eq]AB[er]AB[fr]AW[bo]AW[co]AW[cp]AB[bn]AB[cn]AB[am]AB[bl]AB[dn]AW[eo]AW[ep]AW[gr]AW[hr]AW[fs]AW[gq]AB[fq]AB[fp]AW[fo]AW[gp]AW[go]TR[dq]TR[eq]TR[er]TR[fr]TR[fq]TR[fp]C[the target is marked.]AP[goproblems]
(;W[cq];B[cr]
(;W[bs];B[br];W[es];B[aq]LB[ap:A]C[FORCE];W[ap];B[as];W[ar];B[cs])
(;W[es];B[ds]
(;W[bs];B[gs];W[br];B[cs];W[aq];B[fs])
(;W[gs];B[bs]))
(;W[br];B[bs])
(;W[ds];B[es];W[br];B[bs]))
(;W[es];B[ds]
(;W[cq];B[cr]
(;W[bs];B[gs];W[br];B[cs];W[aq];B[fs])
(;W[gs];B[bs]))
(;W[gs];B[bs]
(;W[cq];B[cr])
(;W[ar];B[aq];W[cr];B[cq];W[br];B[ao])
(;W[cr];B[cq];W[ar];B[aq];W[br];B[ao])))
(;W[bs];B[cq]
(;W[es];B[ds];W[gs];B[cr];W[cs];B[br];W[dr];B[ao];W[ap];B[bp];W[an];B[ds]C[double ko])
(;W[aq];B[ap];W[bp];B[ar];W[ao];B[cr])
(;W[cr];B[aq];W[ap];B[br])
(;W[ds];B[es]
(;W[cr];B[aq];W[ap];B[br])
(;W[aq];B[ap];W[bp];B[ar];W[ao];B[cr]))
(;W[ap];B[cr];W[ds];B[es];W[ar];B[aq];W[cs];B[br];W[dp];B[gs];W[bp];B[as]C[double ko]))
(;W[ap];B[cr]
(;W[aq];B[ar];W[bs];B[br])
(;W[bs];B[cq];W[ds];B[es];W[ar];B[aq];W[cs];B[br];W[dp];B[gs];W[bp];B[as]C[double ko]))
(;W[br];B[cr]
(;W[ar];B[bs])
(;W[aq];B[bs])
(;W[cq];B[bs]))
(;W[ar];B[aq];W[cq];B[cr];W[ap];B[br])
(;W[bp];B[cr]
(;W[cq];B[br];W[es];B[ds];W[gs];B[bs])
(;W[bs];B[ds];W[br];B[cq];W[aq];B[ar]))
(;W[cs];B[cr]
(;W[es];B[ds];W[dr];B[bs])
(;W[bs];B[ds];W[gs];B[es];W[cq];B[br])
(;W[ds];B[es];W[bs];B[br]))
(;W[cr];B[cq]
(;W[br];B[ao];W[ap];B[bp];W[an];B[do];W[dp];B[ao])
(;W[bs];B[aq];W[ap];B[br])
(;W[aq];B[ap]
(;W[bp];B[ar];W[ao];B[bs])
(;W[ao];B[ar]
(;W[bs];B[ds])
(;W[ds];B[bs];W[es];B[dr];W[cs];B[bp]))))
(;W[aq];B[ar]C[]
(;W[cr];B[cq];W[ap];B[br]
(;W[ds];B[bs])
(;W[bs];B[ds]))
(;W[ap];B[cr];W[bs];B[br])
(;W[br];B[cr];W[as];B[ap]
(;W[ao];B[ar]C[])
(;W[cq];B[ar]))
(;W[ds];B[ao];W[br];B[cq];W[as];B[bp]))
(;W[ds]
(;B[es]C[CHOICE]
(;W[br];B[cr])
(;W[cr];B[cq]
(;W[br];B[aq];W[ap];B[bs])
(;W[bs];B[aq];W[ap];B[br])
(;W[aq];B[ap]
(;W[ao];B[br];W[bp];B[bs];W[ar];B[cs])
(;W[bp];B[ar];W[ao];B[bs])))
(;W[cq];B[cr];W[br];B[bs])
(;W[bs];B[cr];W[cs];B[br])
(;W[aq]
(;B[ap]C[CHOICE]
(;W[cq];B[cr];W[br];B[ar];W[bs]
(;B[dr]C[CHOICE]
(;W[bp]C[];B[cs];W[aq]C[RIGHT])
(;W[ao];B[cs];W[bp];B[as];W[br];B[bs];W[aq]C[];B[do];W[dp];B[ap])
(;W[dp]C[NOTTHIS]))
(;B[ao];W[cs]C[RIGHT]))
(;W[ar];B[br];W[bp];B[as];W[aq];B[cs];W[cr];B[cq];W[bs];B[ar];W[ao];B[dr])
(;W[ao];B[cr];W[bp];B[ar]))
(;B[ar]
(;W[cr];B[cq];W[ap]
(;B[bs];W[br];B[dr];W[as]C[];B[do];W[dp]C[RIGHT])
(;B[dr];W[br];B[bs];W[as]C[];B[do];W[dp]C[RIGHT]))
(;W[br]
(;B[cr];W[as];B[ap];W[cq];B[ar];W[dp];B[gs];W[aq]C[RIGHT])
(;B[ap];W[cq];B[cr];W[bs]
(;B[dr]C[CHOICE]
(;W[bp]C[];B[cs];W[aq]C[RIGHT])
(;W[ao];B[cs];W[bp];B[as];W[br];B[bs];W[aq]C[];B[do];W[dp];B[ap])
(;W[dp]C[NOTTHIS]))
(;B[ao];W[cs]C[RIGHT]))))
(;B[cr];W[ar];B[bp];W[ap];B[ao];W[an];B[do];W[dp];B[ao];W[br];B[cq];W[an]C[RIGHT])
(;B[cq];W[ap];B[ar];W[br];B[bs];W[as]
(;B[bp];W[ar];B[ao];W[an];B[do];W[dp];B[ao];W[cr]C[RIGHT])
(;B[do];W[dp];B[ar];W[cr]C[RIGHT]))))
(;B[cq];W[ap];B[es];W[aq];B[ar];W[br];B[bs];W[as]
(;B[bp];W[ar];B[ao];W[an];B[do];W[dp];B[ao];W[cr]C[RIGHT])
(;B[do];W[dp];B[ar];W[cr]C[RIGHT]))
(;B[ap];W[cq];B[cr];W[br];B[bs];W[ar];B[aq];W[ao];B[as];W[es]C[RIGHT])
(;B[dr];W[cq];B[cr];W[ap];B[cs];W[ar]C[RIGHT])
(;B[cs];W[cq];B[cr];W[ap];B[es];W[ar]C[RIGHT])
(;B[cr];W[es];B[ao];W[ap];B[bp];W[an];B[do];W[dp];B[ao];W[cq]C[RIGHT])))
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