invalid problem set
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life and death
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Problem | 7019 |
Created | 2005-08-03 |
Name | Go Seigen Tsumego No.138 |
Source | Go Seigen |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 32 secs |
User Attempts |
80 / 1555 |
Solve Ratio Rating | 5 dan |
| rating history |
(;AB[kb]AB[kc]AB[jc]AB[lc]AB[pd]AB[pc]AB[pb]AB[md]AB[nc]AW[jb]AW[ib]AW[ic]AW[id]AW[je]AW[ke]AW[qb]AW[qc]AW[qd]AW[qe]AW[pe]AW[oe]AW[ne]SZ[19]AW[nd]AW[me]AB[kd]AW[rb]C[White to kill. Ko is not a solution.]
(;W[mb];B[nb]
(;W[oc]
(;B[ob]
(;W[la];B[ka]
(;W[od]C[];B[pa]
(;W[na]C[RIGHT])
(;W[mc];B[ld]))
(;W[mc];B[ld]
(;W[od];B[lb])
(;W[ja];B[na]))
(;W[pa];B[od]
(;W[na];B[mc];W[oa];B[lb])
(;W[mc];B[ld];W[na];B[lb]))
(;W[na];B[od]))
(;W[od];B[ma]
(;W[la];B[oa]C[ko])
(;W[pa];B[lb])
(;W[lb];B[la]))
(;W[ma];B[od]
(;W[ka];B[na]
(;W[mc];B[pa])
(;W[pa];B[la]))
(;W[mc];B[na]
(;W[pa];B[ld])
(;W[ld];B[pa])))
(;W[na];B[la]
(;W[pa];B[ma])
(;W[mc];B[ld])
(;W[ma];B[od]
(;W[pa];B[oa])
(;W[mc];B[ld];W[pa];B[lb])))
(;W[pa];B[lb]
(;W[ma];B[od])
(;W[na];B[oa])
(;W[od];B[ma])
(;W[oa];B[ma])
(;W[la];B[ka])))
(;B[od]C[]
(;W[pa];B[ob];W[na];B[oa];W[mc]C[RIGHT])
(;W[nd];B[oa])))
(;W[pa];B[oa]
(;W[oc];B[ma]
(;W[la];B[lb];W[na]C[ko])
(;W[od];B[lb]
(;W[ka];B[ob])
(;W[ob];B[ka]))
(;W[lb];B[mc]))
(;W[la];B[ka]
(;W[oc];B[ma]C[ko])
(;W[ma];B[od]))
(;W[ma];B[mc]
(;W[ka];B[la]
(;W[oc]C[RIGHT])
(;W[ob];B[na])
(;W[od];B[oc])
(;W[lb];B[na];W[oc];B[la];W[mb];B[qa];W[od]C[RIGHT])
(;W[ja];B[na];W[oc]C[RIGHT]))
(;W[oc]C[RIGHT])
(;W[la];B[ka];W[oc]C[RIGHT])
(;W[lb];B[oc])
(;W[na];B[qa])))
(;W[la];B[ka]
(;W[mc];B[ld])
(;W[oc];B[od];W[pa];B[ob]
(;W[na];B[mc];W[oa];B[lb])
(;W[mc];B[ld];W[na];B[lb]))
(;W[pa];B[oa]
(;W[oc];B[ma]C[ko])
(;W[ma];B[od])))
(;W[ka];B[la]
(;W[oc];B[od]
(;W[pa];B[ob]
(;W[na];B[mc];W[oa];B[lb])
(;W[mc];B[ld];W[na];B[lb]))
(;W[mc];B[ld]))
(;W[na];B[oa]
(;W[ma];B[oc];W[lb];B[mc])
(;W[oc];B[ma])))
(;W[mc];B[ld]
(;W[oc];B[ob]
(;W[od];B[ma])
(;W[la];B[lb])
(;W[pa];B[ma]))
(;W[la];B[lb])
(;W[pa];B[oa];W[oc];B[ma])))
(;W[oc];B[ob]
(;W[od];B[mb])
(;W[mb];B[od];W[mc];B[ld];W[nb];B[lb]C[ko]))
(;W[ob];B[oc]
(;W[mb];B[nb])
(;W[pa];B[mb]))
(;W[pa];B[mb]
(;W[ob];B[nb])
(;W[la];B[ka]))
(;W[nb];B[mb];W[oc];B[ob]C[])
(;W[ma];B[mb]
(;W[ka];B[na];W[la];B[ob])
(;W[la];B[na];W[ka];B[ob])
(;W[ob];B[nb]))
(;W[oa];B[mb];W[la];B[ka])
(;W[la];B[ka]
(;W[ob];B[mb]
(;W[nb];B[oc])
(;W[oc];B[nb]))
(;W[mb];B[nb]
(;W[mc];B[ld])
(;W[oc];B[od];W[pa];B[ob])
(;W[pa];B[oa]
(;W[oc];B[ma]C[ko])
(;W[ma];B[od]))))
(;W[nd];B[mb]))
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