invalid problem set
Problem | 12399 |
Created | 2009-02-14 |
Source | |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 70 secs |
User Attempts |
34 / 177 |
Solve Ratio Rating | 1 kyu |
| rating history |
Warning! I didn't provide variations for useless forcing moves.
(;SZ[19]AW[rl]AW[nn]AW[on]AW[pn]AW[qn]AW[rn]AW[mo]AW[qo]AW[mp]AW[mq]AW[nr]AW[qs]AB[oo]AB[ro]AB[qp]AB[sp]AB[qq]LB[ol:T]C[Can black live? Play elsewhere at T, if you think it is not possible.]GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]KM[0.00]
(;B[rs];W[sr]
(;B[rr];W[sn]
(;B[oq];W[pr]
(;B[or];W[os]
(;B[pq];W[ns]
(;B[nq];W[mr]
(;B[po]C[Well done!RIGHT])
(;B[qr];W[ps];B[po]C[RIGHT]))
(;B[po];W[op]
(;B[nq];W[mr]
(;B[np]C[Well done!RIGHT])
(;B[qr];W[ps];B[np]C[RIGHT]))
(;B[np];W[nq])
(;B[qr];W[ps]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq])))
(;B[qr];W[ps]
(;B[nq];W[mr];B[po]C[RIGHT])
(;B[po];W[op]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq]))))
(;B[qr];W[ps]
(;B[pq];W[ns]
(;B[nq];W[mr];B[po]C[RIGHT])
(;B[po];W[op]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq])))
(;B[nq]C[NOTTHIS]))
(;B[nq]C[NOTTHIS]))
(;B[pq];W[or]))
(;B[or];W[os]
(;B[oq];W[pr]C[]
(;B[pq];W[ns]
(;B[nq];W[mr]
(;B[po]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[po];W[op]
(;B[nq];W[mr]
(;B[np]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[np];W[nq])
(;B[qr];W[ps]))
(;B[qr];W[ps]))
(;B[qr];W[ps]
(;B[pq];W[ns]
(;B[nq];W[mr];B[po]C[RIGHT])
(;B[po];W[op]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq])))
(;B[nq]C[NOTTHIS]))
(;B[nq]C[NOTTHIS]))
(;B[pr];W[ps]C[]
(;B[oq];W[pp])
(;B[nq];W[oq])))
(;B[pr];W[ps]
(;B[or];W[os]
(;B[oq];W[pp])
(;B[nq];W[oq]))
(;B[oq];W[pp];B[os];W[or]))
(;B[sq]C[NOTTHIS])
(;B[rq]C[NOTTHIS];W[so];B[oq]C[Works too.]))
(;B[qr];W[pr]C[]
(;B[ps];W[or]
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead]))
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead]))
(;B[pr];W[ps]C[];B[os];W[or])
(;B[ps];W[pr]C[];B[qr])
(;B[oq];W[pr]
(;B[rr];W[sn]C[]
(;B[or];W[os]
(;B[pq];W[ns]
(;B[nq];W[mr]
(;B[po]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[po];W[op]
(;B[nq];W[mr]
(;B[np]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[np];W[nq])
(;B[qr];W[ps]))
(;B[qr];W[ps]))
(;B[qr];W[ps]
(;B[pq];W[ns]
(;B[nq];W[mr];B[po]C[RIGHT])
(;B[po];W[op]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq])))
(;B[nq]C[NOTTHIS]))
(;B[nq]C[NOTTHIS]))
(;B[pq];W[or]))
(;B[qr];W[or]C[Only one eye in the corner])
(;B[rq]C[NOTTHIS])
(;B[or];W[os]
(;B[rr];W[sn]C[]
(;B[pq];W[ns]
(;B[nq];W[mr]
(;B[po]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[po];W[op]
(;B[nq];W[mr]
(;B[np]C[Well done!RIGHT])
(;B[qr];W[ps]))
(;B[np];W[nq])
(;B[qr];W[ps]))
(;B[qr];W[ps]))
(;B[qr];W[ps]
(;B[pq];W[ns]
(;B[nq];W[mr];B[po]C[RIGHT])
(;B[po];W[op]
(;B[nq];W[mr];B[np]C[RIGHT])
(;B[np];W[nq])))
(;B[nq]C[NOTTHIS]))
(;B[nq]C[NOTTHIS]))
(;B[qr]C[NOTTHIS])
(;B[rq]C[NOTTHIS])
(;B[pq]C[NOTTHIS]))
(;B[pq];W[or]))
(;B[or];W[os]
(;B[oq];W[qr])
(;B[qr];W[ps])
(;B[rr];W[sn]C[]
(;B[oq];W[pr]C[])
(;B[pr];W[ps]C[]))
(;B[rq]C[NOTTHIS]))
(;B[rq]C[NOTTHIS];W[sn];B[rr];W[so];B[oq]C[Works too.]))
(;B[qr];W[pr]
(;B[sr];W[rs]TR[rq]TR[rr]C[Miai])
(;B[rs];W[sr]
(;B[ps];W[or]
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead]))
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead])))
(;B[ps];W[pr]
(;B[qr];W[sr];B[rs];W[or]
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead]))
(;B[rs];W[sr];B[qr];W[or]
(;B[rq];W[sn]TR[so]TR[sq]C[Dead])
(;B[rr];W[sn];B[sq];W[rp]C[Dead])))
(;B[pr];W[ps]
(;B[os];W[or];B[rs];W[sr];B[qr];W[ps]C[Dead, only one eye in corner.])
(;B[rs];W[sr];B[os];W[or];B[qr];W[ps]C[Dead, only one eye in corner.]))
(;B[rq];W[rs])
(;B[oq];W[pr]C[There might be better moves than this one (this is the best I found).]
(;B[rr];W[rs];B[or];W[os];B[nq];W[mr]C[Dead])
(;B[rs];W[rr];B[qr];W[rq];B[sr];W[ss]C[Ko]))
(;B[rr];W[rs])
(;B[ol]C[No, black can live.]))
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