invalid problem set
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life and death
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Problem | 7787 |
Created | 2005-12-13 |
Source | Problem 7786 |
Rating | |
Difficulty | 6.6 kyu |
Average Solve Time | 59 secs |
User Attempts |
1009 / 3661 |
Solve Ratio Rating | 3 kyu |
| rating history |
(;AB[pr]AB[qr]AB[rr]AB[pq]AB[qp]AB[rp]AW[qq]AW[rq]AW[sp]AW[ro]AB[qo]AB[qn]AB[qm]AW[rn]AW[rm]AW[ql]AW[pl]AW[pp]AW[op]AW[oq]AW[or]AW[nk]AW[ml]AW[mn]AW[mp]AB[om]AB[on]TR[rr]C[If Black plays the triangled move in problem 7786, what can White do?]AP[goproblems]
(;W[sr];B[so]
(;W[sn];B[rs]
(;W[ps];B[sq]
(;W[rq];B[qq]
(;W[sq];B[ss]
(;W[rl];B[so]
(;W[sq]C[Black is down to one eye and dies.RIGHT])
(;W[sp];B[sq])
(;W[pm];B[sq])
(;W[pn];B[sq]))
(;W[so];B[rl]TR[rm]TR[rn]TR[ro]TR[so]TR[sn]TR[sp]TR[sq]TR[sr]TR[rq]C[The marked stones are in atari.])
(;W[sl];B[so]
(;W[sp];B[sq])
(;W[sq]C[Black is down to one eye and dies.RIGHT])
(;W[pm];B[sq])
(;W[pn];B[sq])
(;W[po];B[sq]))
(;W[rk];B[so]
(;W[sq]C[Black is down to one eye and dies.RIGHT])
(;W[sp];B[sq]))
(;W[sk];B[rl]
(;W[so];B[sm])
(;W[rk];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[sl];B[sq]))
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq])
(;W[sm];B[sq])))
(;W[sm];B[rl];W[rk];B[so]
(;W[sq];B[sl])
(;W[sp];B[sq]))
(;W[pm];B[rl]
(;W[rk];B[so]
(;W[sl];B[sq])
(;W[sq];B[sm])
(;W[sp];B[sq]))
(;W[so];B[sm])
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq]))
(;W[pn];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[rk];B[sm])))
(;W[pn];B[rl]
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[so];B[sm])
(;W[pm];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[rk];B[sm]))
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq])
(;W[pm];B[sm])))
(;W[qs];B[rl]
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[os];B[so];W[sp];B[sq])
(;W[so];B[sm])
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq])))
(;W[os];B[rl]
(;W[so];B[sm])
(;W[rk];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[sl];B[sq]))
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq])
(;W[pm];B[sm])
(;W[pn];B[sm]))
(;W[pm];B[so]
(;W[pn];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sm])
(;W[sq];B[sm]))
(;W[pn];B[so]
(;W[pm];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sm])
(;W[sl];B[sm])
(;W[sq];B[sm])))
(;W[po];B[rl]
(;W[pn];B[pm]
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[so];B[sm]))
(;W[pm];B[pn]
(;W[so];B[sm])
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sq])))
(;W[so];B[sm])
(;W[rk];B[so]
(;W[sl];B[sq])
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[pm];B[sm])
(;W[pn];B[sm]))
(;W[sl];B[so]
(;W[rk];B[sq])
(;W[sq];B[sm])
(;W[pm];B[sm])
(;W[pn];B[sm]))))
(;W[rl];B[sq]C[Ko; but White should be able to kill unconditionally.])
(;W[so];B[ss]
(;W[sq];B[rl]TR[rm]TR[rn]TR[ro]TR[so]TR[sn]TR[sp]TR[sq]TR[sr]TR[rq]C[The marked stones are in atari.])
(;W[rl];B[sq])
(;W[rk];B[sq])
(;W[sl];B[sq]))
(;W[sl];B[sq]C[Ko; but White should be able to kill unconditionally.])
(;W[rk];B[sq]C[Ko; but White should be able to kill unconditionally.])
(;W[pm];B[ss]
(;W[rl];B[sq])
(;W[rk];B[sq])
(;W[sl];B[sq])
(;W[so];B[sq])
(;W[pn];B[sq])
(;W[sq];B[rl]
(;W[rk];B[so]
(;W[sl];B[sq])
(;W[sq];B[sm])
(;W[sp];B[sq]))
(;W[so];B[sm])
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk]))
(;W[pn];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[rk];B[sm]))))
(;W[pn];B[ss]
(;W[pm];B[sq])
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq])
(;W[sq];B[rl]
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[so];B[sm])
(;W[pm])
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk])
(;W[pm];B[sm]))))
(;W[qs];B[ss]
(;W[sq];B[rl]
(;W[rk];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[sl];B[sq]))
(;W[os];B[so];W[sp];B[sq])
(;W[so];B[sm])
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk])))
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[rk];B[sq])
(;W[sl];B[sq])
(;W[os];B[sq]))
(;W[os];B[ss]
(;W[rl];B[sq])
(;W[rk];B[sq])
(;W[sl];B[sq])
(;W[sq];B[rl]
(;W[so];B[sm])
(;W[rk];B[so]
(;W[sp];B[sq])
(;W[sq];B[sm])
(;W[sl];B[sq]))
(;W[sl];B[so]
(;W[sq];B[sm])
(;W[sp];B[sq])
(;W[rk])
(;W[pm];B[sm])
(;W[pn];B[sm]))
(;W[pm];B[so]
(;W[pn];B[sm])
(;W[sp];B[sq])
(;W[rk];B[sm])
(;W[sq];B[sm]))
(;W[pn];B[so]
(;W[pm])
(;W[sp];B[sq])
(;W[rk];B[sm])
(;W[sl])
(;W[sq];B[sm])))
(;W[qs];B[sq])
(;W[so];B[sq])))
(;W[so];B[ss]MA[rl]C[Black lives, and probably in sente too.])
(;W[rl];B[ss])
(;W[sl];B[ss])
(;W[rk];B[ss])
(;W[pm];B[ss])
(;W[pn];B[ss])
(;W[qq];B[rq]))
(;W[sq];B[ss]
(;W[so];B[rl]TR[rm]TR[rn]TR[sn]TR[so]TR[ro]TR[sp]TR[sq]TR[sr]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[rl];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps];B[rq]))
(;W[rq];B[sp]
(;W[sq];B[ps])
(;W[ps];B[sq]))
(;W[ps];B[sp]))
(;W[ps];B[so]
(;W[rl];B[sp])
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[rl])
(;W[rl];B[rq])
(;W[rk];B[rq])
(;W[sl];B[rq]))
(;W[rq]
(;B[sp]
(;W[sq];B[rl])
(;W[rl];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq]))
(;B[rl];W[sp];B[rk]))
(;W[sl];B[sp])
(;W[rk];B[sp]))
(;W[sl];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps];B[rq]))
(;W[ps];B[sp])
(;W[rq];B[sp]
(;W[ps];B[sq])
(;W[sq];B[ps])))
(;W[rk];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps];B[rq]))
(;W[rq];B[sp]
(;W[sq];B[ps])
(;W[ps];B[sq]))
(;W[ps];B[sp])))
(;W[rl];B[ss]
(;W[so];B[sq])
(;W[sq];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps];B[rq]))
(;W[rq];B[sp]
(;W[sq])
(;W[ps];B[sq]))
(;W[ps];B[sp]))
(;W[ps];B[sq]))
(;W[so];B[ss]
(;W[rl];B[sq])
(;W[sq];B[rl]TR[rm]TR[rn]TR[sn]TR[so]TR[ro]TR[sp]TR[sq]TR[sr]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[ps];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq]))
(;W[rk];B[ss]
(;W[sq];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps]))
(;W[rq];B[sp]
(;W[sq])
(;W[ps]))
(;W[ps]))
(;W[so];B[sq])
(;W[ps];B[sq]))
(;W[sl];B[ss]
(;W[sq];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[ps])
(;W[ps]))
(;W[ps])
(;W[rq];B[sp]
(;W[ps])
(;W[sq])))
(;W[so];B[sq])
(;W[ps];B[sq]))
(;W[pm];B[ss]
(;W[sq];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rq];B[rl])
(;W[ps];B[rq])
(;W[rl]C[Black lives in sente...]MA[ps]MA[rq])
(;W[rk]C[Black lives in sente...]MA[ps]MA[rq])
(;W[sl]C[Black lives in sente...]MA[ps]MA[rq]))
(;W[rq];B[sp]
(;W[sq]MA[ps]MA[rl]C[Black lives in sente...];B[rl])
(;W[rl]C[Black lives in sente...]MA[sq]MA[ps])
(;W[ps];B[rl])))
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[ps];B[sq])
(;W[pn];B[sq]))
(;W[pn];B[ss]
(;W[pm];B[sq])
(;W[po];B[pm]
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[ps];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq])
(;W[sq];B[so]
(;W[sq];B[sp]
(;W[rq];B[rl])
(;W[ps];B[rl])
(;W[rl]MA[rq]MA[ps]C[Black lives in sente...]))
(;W[sp];B[sq])
(;W[rq];B[sp]
(;W[sq];B[rl])
(;W[ps];B[rl])
(;W[rl]C[Black lives in sente...]MA[ps]MA[sq]))
(;W[ps];B[rl]
(;W[sp];B[rk])
(;W[sq];B[sm])
(;W[rk];B[sm])
(;W[rq];B[sm]))
(;W[rl]C[Black lives in sente...])))
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[sq];B[so]
(;W[rl]C[Black lives in sente...])
(;W[sp];B[sq])
(;W[sq];B[sp]
(;W[rl]C[Black lives in sente...]MA[rq]MA[ps])
(;W[rq];B[rl])
(;W[ps];B[rl])
(;W[rk]C[Black lives in sente...]MA[rq]MA[ps])
(;W[sl]C[Balck lives in sente...]MA[rq]MA[ps]))
(;W[rq];B[sp]
(;W[sq];B[rl])
(;W[ps];B[rl])
(;W[rl]C[Black lives in sente...]MA[sq]MA[ps])
(;W[rk]MA[sq]MA[ps]C[Black lives in sente...]))
(;W[ps];B[rl];W[sp];B[rk]))
(;W[ps];B[sq])
(;W[rk])
(;W[sl];B[sq]))
(;W[ss];B[sq])
(;W[qs];B[ps]
(;W[os];B[sq]
(;W[rq];B[qq]
(;W[rl];B[ss]
(;W[so];B[sq])
(;W[sq];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp])))
(;W[sq];B[ss]
(;W[so];B[rl]TR[rm]TR[rn]TR[ro]TR[sn]TR[so]TR[sp]TR[sq]TR[sr]TR[rq]C[The marked stones are in atari.])
(;W[rl];B[so]
(;W[sp];B[sq])
(;W[sq];B[sp]))
(;W[sl];B[so])
(;W[rk];B[so]))
(;W[so];B[ss]
(;W[rk];B[sq])
(;W[rl];B[sq])
(;W[sl];B[sq])
(;W[sq];B[rl]TR[rm]TR[rn]TR[ro]TR[sn]TR[so]TR[sp]TR[sq]TR[sr]TR[rq]C[The marked stones are in atari.]))
(;W[rk];B[ss]
(;W[so];B[sq])
(;W[sq];B[so])))
(;W[rl];B[ss])
(;W[so];B[ss]))
(;W[sq];B[ss]
(;W[so];B[rl]TR[rm]TR[rn]TR[ro]TR[sn]TR[so]TR[sp]TR[sq]TR[sr]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[rl];B[so])
(;W[rk];B[so])
(;W[sl];B[so])
(;W[os];B[so]))
(;W[so];B[ss]
(;W[sq];B[rl]TR[rm]TR[rn]TR[ro]TR[sn]TR[so]TR[sp]TR[sq]TR[sr]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[rk];B[sq])
(;W[sl];B[sq])
(;W[rl];B[sq])
(;W[os];B[sq]))
(;W[rl];B[ss]
(;W[sq];B[so])
(;W[so];B[sq])
(;W[os]))
(;W[rk];B[ss]
(;W[so];B[sq])
(;W[os];B[sq])
(;W[sq];B[so]))
(;W[sl];B[ss]
(;W[os];B[sq])
(;W[sq];B[so])
(;W[so];B[sq])))
(;W[po];B[ss]
(;W[ps];B[sq])
(;W[sq];B[so]
(;W[sq];B[sp];W[rq];B[rl])
(;W[sp];B[sq])
(;W[ps];B[sp])
(;W[pn];B[pm]
(;W[sq];B[sp]
(;W[rq];B[rl])
(;W[ps];B[rl])
(;W[rl]MA[rq]MA[ps]C[Black lives in sente...]))
(;W[sp];B[sq])
(;W[rq];B[sp]
(;W[sq])
(;W[ps];B[rl])
(;W[rl]C[Black lives in sente...]MA[ps]MA[sq]))
(;W[ps];B[rl]
(;W[sp];B[rk])
(;W[sq];B[sm])
(;W[rk];B[sm])
(;W[rq];B[sm]))
(;W[rl]C[Black lives in sente...]))
(;W[pm];B[pn]))
(;W[so];B[sq])
(;W[rl];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq])
(;W[pn];B[pm]
(;W[rl];B[sq])
(;W[so];B[sq])
(;W[ps];B[sq])
(;W[sl];B[sq])
(;W[rk];B[sq])
(;W[sq];B[so]
(;W[sq];B[sp]
(;W[rq];B[rl])
(;W[ps];B[rl])
(;W[rl]MA[rq]MA[ps]C[Black lives in sente...]))
(;W[sp];B[sq])
(;W[rq];B[sp]
(;W[sq])
(;W[ps];B[rl])
(;W[rl]C[Black lives in sente...]MA[ps]MA[sq]))
(;W[ps];B[rl]
(;W[sp];B[rk])
(;W[sq];B[sm])
(;W[rk];B[sm])
(;W[rq];B[sm]))
(;W[rl]C[Black lives in sente...])))
(;W[pm];B[pn])))
(;W[sq];B[ss])
(;W[rl];B[sq])
(;W[ps];B[sq])
(;W[pm];B[sq])
(;W[pn];B[sq])
(;W[qs];B[sq])
(;W[rs];B[sq])
(;W[sm];B[sq]))
(;W[sq];B[so]
(;W[sn];B[sr]
(;W[so];B[rl]TR[rm]TR[rn]TR[sn]TR[so]TR[ro]TR[sp]TR[sq]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[rl];B[so])
(;W[sl];B[so])
(;W[rk];B[so])
(;W[ps];B[so])
(;W[pn];B[pm]
(;W[rl];B[so])
(;W[so];B[rl]TR[rm]TR[rn]TR[ro]TR[sn]TR[so]TR[sp]TR[sq]TR[rq]TR[qq]C[The marked stones are in atari.])
(;W[rk];B[so])
(;W[sl];B[so])
(;W[po];B[so])
(;W[ps];B[so]))
(;W[pm];B[oo]
(;W[pn];B[po]
(;W[rl];B[so])
(;W[rk];B[so])
(;W[sl];B[so])
(;W[so];B[rl])
(;W[ps];B[so]))
(;W[po];B[pn]
(;W[so];B[rl])
(;W[rk];B[so])
(;W[sl];B[so])
(;W[rl];B[so]))
(;W[so];B[rl])
(;W[rl];B[so])
(;W[rk];B[so])
(;W[sl];B[so])
(;W[ps];B[so]))
(;W[po];B[so]))
(;W[rl];B[sr])
(;W[sl];B[sr])
(;W[rk];B[sr])
(;W[ps];B[sr])
(;W[sr];B[ss]))
(;W[ps];B[sq])
(;W[so];B[sq])
(;W[rl];B[sq])
(;W[rk];B[sq])
(;W[rs];B[sq]
(;W[ps];B[qs])
(;W[qs];B[ps])
(;W[sr];B[so])
(;W[rq];B[so])
(;W[so];B[qs])))
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