invalid problem set
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life and death
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Problem | 11021 |
Created | 2008-03-05 |
Name | k121 |
Source | |
Rating | |
Difficulty | 6 dan |
Average Solve Time | 76 secs |
User Attempts |
141 / 597 |
Solve Ratio Rating | 2 kyu |
| rating history |
ko is not a solution
(;AB[sp]AB[rp]AB[pp]AB[qp]AB[op]AB[np]AW[rq]AB[mp]AB[mq]AB[mr]AB[ms]AW[oq]AW[nq]AW[nr]AW[pr]AB[pq]AW[qq]AW[rr]AW[lo]AW[nn]AW[pn]AW[rn]AW[qm]AW[kn]AW[lq]AW[kr]C[black to live]AB[sq]AW[sr]AP[goproblems]
(;B[ps]
(;W[os]C[CHOICE]
(;B[ns];W[qs];B[or];W[nq]C[ko])
(;B[qs];W[rs];B[ns];W[qr];B[or];W[ps];B[nq]C[RIGHT])
(;B[rs];W[qs]))
(;W[qs];B[os]C[RIGHT])
(;W[or];B[ns]C[RIGHT]))
(;B[or];W[ps]
(;B[ns];W[nq])
(;B[rs];W[qs])
(;B[qs];W[rs]))
(;B[ns];W[ps])
(;B[rs];W[qs]
(;B[or];W[os])
(;B[os];W[ps];B[ns];W[ss])
(;B[ns];W[ps]))
(;B[qs];W[ps]
(;B[rs];W[ns])
(;B[or];W[rs])
(;B[os];W[rs])
(;B[ns];W[rs];B[or];W[nq]))
(;B[os];W[ps]
(;B[ns];W[qs])
(;B[rs];W[qs];B[ns];W[ss])))
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