invalid problem set
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Problem | 4558 |
Created | 2004-06-01 |
Source | |
Rating | |
Difficulty | 23.8 kyu |
Average Solve Time | 14 secs |
User Attempts |
19884 / 30697 |
Solve Ratio Rating | 15 kyu |
| rating history |
(;AB[pp]AW[pq]AB[qp]AW[op]AB[oq]AW[nq]AB[or]AW[nr]AW[oo]MA[pq]C[how can black catch the marked stone?]AP[goproblems]
(;B[pr];W[qq]
(;B[rq];W[qr]
(;B[rr];W[qs]
(;B[rs]C[RIGHT])
(;B[ps];W[os]))
(;B[qs];W[rr]
(;B[sr];W[rs]
(;B[ss]C[RIGHT])
(;B[ps];W[os]))
(;B[rs];W[sr]
(;B[sq]C[RIGHT])
(;B[ss];W[ps]))
(;B[rp];W[os]))
(;B[rs];W[ps])
(;B[ps];W[qs])
(;B[rp];W[ps]))
(;B[qr];W[rq]
(;B[rr];W[rp])
(;B[rp]C[RIGHT]))
(;B[rr]C[RIGHT])
(;B[rp];W[qr])
(;B[qs]C[RIGHT])
(;B[np];W[qr])
(;B[ps];W[qr])
(;B[rs];W[qr];B[qs];W[ps];B[os];W[ns];B[ps];W[rr]))
(;B[qq];W[pr]
(;B[qr];W[os])
(;B[os];W[ps])
(;B[ns];W[os])
(;B[ps];W[os])
(;B[qs];W[os]))
(;B[qr];W[pr]
(;B[ps];W[os])
(;B[os];W[ps])
(;B[qq];W[os])
(;B[qs];W[os]))
(;B[os];W[pr])
(;B[ps];W[pr];B[os];W[qs])
(;B[qs];W[pr])
(;B[np];W[pr])
(;B[po];W[pr])
(;B[on];W[pr])
(;B[no];W[pr])
(;B[mq];W[pr])
(;B[mr];W[pr])
(;B[ns];W[pr])
(;B[pn];W[pr])
(;B[rq];W[pr])
(;B[rr];W[pr]))
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