invalid problem set
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life and death
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+7
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Problem | 10323 |
Created | 2007-09-06 |
Source | |
Rating | |
Difficulty | 27.3 kyu |
Average Solve Time | 30 secs |
User Attempts |
9553 / 15298 |
Solve Ratio Rating | 15 kyu |
| rating history |
Easy problem
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
AW[rb][qc][sc][qd][re][rf]AB[pb][qb][pc][pd][oe][qe][qf][qg][rg][sg]TR[sc]C[Black to kill, no ko.]
(;B[rd]LB[ra:c][rc:a][sd:b][sf:c]C[Simple! Note that white needs 3 moves to live (a, b and c) without interference from black. RIGHT])
(;B[ra]
;W[rd]
(;B[sb]
;W[sa])
(;B[sf]
;W[se]
(;B[sb]
;W[sa])
(;B[qa]
;W[sb]))
(;B[se]
;W[sf]
(;B[sb]
;W[sa])
(;B[qa]
;W[sb]))
(;B[qa]
;W[sb]
(;B[sf]
;W[se])
(;B[se]
;W[sf])))
(;B[se]
;W[rd]
(;B[sf]TR[ra][sd]C[RIGHT])
(;B[ra]
;W[sf]C[Only ko.]))
(;B[sf]
;W[rd]
(;B[ra]
;W[se]C[Only ko.])
(;B[se]TR[ra][sd]C[RIGHT])
(;B[sa]
;W[ra]
(;B[sd]
;W[se])
(;B[se]
;W[sd])))
(;B[sd]
;W[rd]
(;B[sf]
;W[se]
;B[ra]
;W[sb])
(;B[se]
;W[sf]
;B[ra]
;W[sb])
(;B[ra]
;W[sb]
(;B[sf]
;W[se])
(;B[se]
;W[sf])))
(;B[sb]
;W[rd]
(;B[ra]
;W[sa]C[Only ko.])
(;B[sf]
;W[sa])
(;B[se]
;W[sa])
(;B[sd]
;W[sa]))
(;B[sa]
;W[rd]
(;B[ra]
;W[sf]TR[qa][sb])
(;B[sf]
;W[ra]
(;B[sd]
;W[se])
(;B[se]
;W[sd]))))
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