invalid problem set
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life and death
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Problem | 5305 |
Created | 2004-10-20 |
Name | chinese - 255 |
Source | chinese book |
Rating | |
Difficulty | 11.5 kyu |
Average Solve Time | 43 secs |
User Attempts |
3438 / 9352 |
Solve Ratio Rating | 6 kyu |
| rating history |
(;AB[rq]AW[qr]AW[qq]AW[rp]AW[ro]AW[rn]AW[qo]AB[qp]AB[pp]AB[po]AB[pn]AB[qn]AB[rm]AB[ql]AB[or]AB[nq]C[Black to play and win]AP[goproblems]
(;B[rr];W[rs]
(;B[sr]
(;W[so]C[CHOICE]
(;B[sq]C[RIGHT])
(;B[pq];W[sq]LB[sp:Ko?])
(;B[pr];W[sq])
(;B[ps];W[sq]))
(;W[sp]C[CHOICE]
(;B[sn]C[RIGHT])
(;B[pq]
(;W[sq]C[CHOICE];B[sn];W[ss];B[rr]C[RIGHT])
(;W[sn];B[pr];W[qs];B[ps]C[RIGHT]))
(;B[pr]
(;W[sq]C[CHOICE];B[sn];W[ss];B[rr]C[RIGHT])
(;W[sn];B[pq];W[qs];B[ps]C[RIGHT]))
(;B[ps];W[sn]
(;B[qs];W[sq];B[ss];W[rs];B[rr];W[sr]LB[ss:Ko?])
(;B[pr];W[sq];B[qs];W[ss];B[rr];W[sr])
(;B[sm];W[qs]
(;B[pq]C[RIGHT])
(;B[pr]C[RIGHT]))))
(;W[sn]C[CHOICE]
(;B[sp]C[RIGHT])
(;B[pr];W[sp];B[sm];W[qs]
(;B[pq]C[RIGHT])
(;B[ps]C[RIGHT]))
(;B[pq];W[sp];B[sm];W[qs]
(;B[pr]C[RIGHT])
(;B[ps]C[RIGHT]))
(;B[ps];W[sp];B[sm];W[qs]
(;B[pr]C[RIGHT])
(;B[pq]C[RIGHT])))
(;W[qs];B[nl]LB[nm:enuk]LB[om:i ]LB[mm: T]
(;W[ss];B[sq]
(;W[sp];B[sn])
(;W[sn];B[sp]))
(;W[sp];B[sn])
(;W[sn];B[sp];W[ss];B[sq])))
(;B[sq];W[sp]
(;B[sn];W[sr])
(;B[sr];W[sn]))
(;B[sn];W[sr]))
(;B[sq];W[sr]
(;B[rr];W[rs]LB[ss:Ko?])
(;B[sp];W[rr];B[qs];W[rs]))
(;B[sn];W[sq]
(;B[so];W[rr])
(;B[rr];W[rs];B[sr];W[ss]))
(;B[rs];W[rr];B[qs];W[ps];B[pr];W[ss];B[sq];W[qs])
(;B[pr];W[rr];B[sq];W[sr]))
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