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life and death
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+3
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Problem | 5294 |
Created | 2004-10-18 |
Name | chinese - 253 |
Source | Chinese book |
Rating | |
Difficulty | 9.9 kyu |
Average Solve Time | 50 secs |
User Attempts |
1710 / 5055 |
Solve Ratio Rating | 5 kyu |
| rating history |
(;AB[rq]AB[qq]AB[pq]AB[qp]AW[rp]AW[ro]AW[rn]AW[qo]AB[po]AB[qn]AB[rm]AB[pn]AB[ql]AW[pp]AW[op]AW[oq]AW[pr]AW[qr]C[Black to play and win]AP[goproblems]
(;B[rr]
(;W[rs]C[CHOICE]
(;B[sr];W[sp]
(;B[sn];W[qs]
(;B[or];W[nr]
(;B[sm];W[os];B[so]C[RIGHT])
(;B[os];W[ns];B[sm];W[ps]
(;B[so]C[RIGHT])
(;B[or]C[RIGHT])
(;B[os]C[RIGHT])))
(;B[sm];W[ss];B[so];W[sq])
(;B[sq];W[ss]))
(;B[sq];W[ss])
(;B[or];W[sq];B[ps];W[ss]))
(;B[sq];W[sp])
(;B[sp];W[sr]
(;B[sn];W[sq])
(;B[so];W[sq])
(;B[sq];W[so])))
(;W[sq]C[CHOICE]
(;B[rs];W[sr];B[or];W[nr]
(;B[sn];W[os]
(;B[sp]C[RIGHT];W[so];B[sp]C[RIGHT])
(;B[so]C[RIGHT]))
(;B[os];W[ns]
(;B[sn];W[ps]
(;B[sp]C[RIGHT])
(;B[so]C[RIGHT]))
(;B[ps];W[qs];B[sn];W[ss])
(;B[qs];W[ps])
(;B[sp];W[so];B[sm];W[ps];B[sn]C[RIGHT]))
(;B[so];W[sn];B[sm];W[sp])
(;B[sp]
(;W[so]
(;B[sm];W[os];B[sn]C[RIGHT])
(;B[ps];W[os];B[sm];W[qs]))
(;W[os]
(;B[so];W[sn];B[sp];W[qs];B[ss];W[sq]
(;B[sm];W[sr])
(;B[sr];W[sq]))
(;B[sn];W[so];B[sp]C[RIGHT]))))
(;B[sr];W[so]
(;B[sm];W[rs])
(;B[sp]))
(;B[qs];W[or];B[rs];W[ps]
(;B[sr];W[ss])
(;B[sn];W[sr]))
(;B[sp];W[so];B[rs]C[RIGHT])))
(;B[sn];W[rr]
(;B[sp];W[sq])
(;B[so];W[sq]))
(;B[sp];W[rr];B[sq];W[sr]
(;B[so];W[sn])
(;B[sn];W[so]))
(;B[sr];W[rr];B[sq];W[sp])
(;B[sq];W[rr]
(;B[sp];W[sr]
(;B[so];W[sn])
(;B[sn];W[so]))
(;B[sr];W[sp]))
(;B[so];W[sq];B[rr];W[sr];B[rs];W[qs])
(;B[rs];W[rr]))
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