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life and death
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Problem | 2628 |
Created | 2003-06-23 |
Source | KGS |
Rating | |
Difficulty | 11 kyu |
Average Solve Time | 58 secs |
User Attempts |
2336 / 7082 |
Solve Ratio Rating | 5 kyu |
| rating history |
(;SZ[9]AW[bf]AW[bg]AW[dg]AW[ch]AW[eh]AW[fh]AB[bc]AB[be]AB[ce]AB[cf]AB[ef]AB[cg]AB[eg]AB[fg]AB[gg]AB[gh]
(;B[bh];W[ah]
(;B[bi];W[ci]
(;B[af];W[ai]
(;B[bh];W[bi]
(;B[ae];W[ag]
(;B[dh];W[di]
(;B[fi]C[RIGHT])
(;B[df];W[fi]C[ko]))
(;B[fi];W[ei]
(;B[dh]C[RIGHT])
(;B[gi];W[dh])
(;B[df];W[dh]))
(;B[df];W[dh])
(;B[ei];W[fi])
(;B[di];W[dh]))
(;B[dh];W[di]
(;B[fi]C[RIGHT])
(;B[ae];W[ag]
(;B[fi]C[RIGHT])
(;B[df];W[fi]C[ko]))
(;B[df];W[fi]C[ko]))
(;B[df];W[dh])
(;B[fi];W[ei]
(;B[dh]C[RIGHT])
(;B[ae];W[ag]
(;B[dh]C[RIGHT])
(;B[df];W[dh]))
(;B[df];W[dh])))
(;B[df];W[dh]C[White lives.])
(;B[dh];W[di]
(;B[fi]C[RIGHT])
(;B[df];W[fi]C[ko])
(;B[bh];W[bi]
(;B[df];W[fi]C[ko])
(;B[fi]C[RIGHT])
(;B[ae];W[ag]
(;B[df];W[fi]C[ko])
(;B[fi]C[RIGHT])))
(;B[ae];W[bh]
(;B[fi]C[RIGHT])
(;B[df];W[fi]C[ko])))
(;B[fi];W[ei]
(;B[dh]C[RIGHT])
(;B[df];W[dh])
(;B[bh];W[bi]
(;B[dh]C[RIGHT])
(;B[df];W[dh])
(;B[ae];W[ag]
(;B[dh]C[RIGHT])
(;B[df];W[dh])))
(;B[ae];W[bh]
(;B[dh]C[RIGHT])
(;B[df];W[dh])))
(;B[ae];W[dh]
(;B[fi];W[ei]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh]))
(;B[bh];W[bi]
(;B[ag]C[RIGHT])
(;B[fi];W[ei];B[ag]C[RIGHT]))
(;B[ag];W[bh])))
(;B[ag];W[af]C[White lives.])
(;B[di];W[ai]
(;B[af];W[dh])
(;B[dh];W[af])
(;B[fi];W[dh])
(;B[df];W[dh])
(;B[bh];W[dh];B[af];W[bi];B[ae];W[ag]))
(;B[fi];W[af])
(;B[dh];W[di]
(;B[fi];W[af])
(;B[af];W[ai]
(;B[fi]C[RIGHT])
(;B[ae];W[fi]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh]))
(;B[df];W[fi]C[ko]))
(;B[ae];W[ai]
(;B[fi];W[af])
(;B[bh];W[bi]
(;B[af];W[ag]
(;B[fi]C[RIGHT])
(;B[df];W[fi]C[ko]))
(;B[fi];W[af]))
(;B[af];W[fi]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh])
(;B[df];W[ag]C[ko]))
(;B[df];W[fi]C[ko]))
(;B[ag];W[af])
(;B[df];W[af]))
(;B[df];W[dh]
(;B[af];W[ai])
(;B[ag];W[af])
(;B[fi];W[ai]LB[af:A]LB[ei:B]C[A and B are mi-ai for the second eye.]))
(;B[ae];W[ai]
(;B[fi];W[af])
(;B[af];W[fi]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[dh];W[di]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh]))
(;B[df];W[dh]
(;B[ag])
(;B[bh];W[bi];B[ag]C[RIGHT]))
(;B[ag];W[bh]))
(;B[bh];W[fi]
(;B[ag];W[bi]
(;B[af]C[RIGHT])
(;B[dh];W[af]))
(;B[af];W[bi]
(;B[ag]C[RIGHT])
(;B[dh];W[di]
(;B[ag]C[RIGHT])
(;B[df];W[ag]C[ko]))
(;B[df];W[dh];B[ag]C[RIGHT]))
(;B[df];W[dh]
(;B[ag];W[bi];B[af]C[RIGHT])
(;B[af];W[bi];B[ag]C[RIGHT]))
(;B[dh];W[di]
(;B[df];W[ag]C[ko])
(;B[ag];W[bi];B[af]C[RIGHT])
(;B[af];W[bi];B[ag]C[RIGHT])))
(;B[df];W[dh]C[White lives.])
(;B[dh];W[af]))
(;B[ei];W[af]))
(;B[af];W[bi])
(;B[di];W[bi]))
(;B[af];W[bh]
(;B[di];W[dh]
(;B[ag];W[ah]
(;B[fi];W[ei])
(;B[ci];W[bi])
(;B[ei];W[fi]))
(;B[fi];W[ei]
(;B[ah];W[ag])
(;B[ag];W[ah]))
(;B[ah];W[ag])
(;B[ci];W[ag]
(;B[fi];W[ei])
(;B[bi];W[ei])
(;B[ei];W[fi]))
(;B[ei];W[fi]
(;B[ag];W[ah])
(;B[ah];W[ag])))
(;B[ag];W[ah]
(;B[bi];W[fi]
(;B[di];W[dh];B[ci]C[seki - white lives.])
(;B[dh];W[di])
(;B[ci];W[di]))
(;B[di];W[dh]
(;B[fi];W[ei])
(;B[ci];W[bi])
(;B[ei];W[fi]))
(;B[fi];W[ei]
(;B[dh];W[di];B[bi]C[RIGHT])
(;B[bi];W[ci]
(;B[dh]C[RIGHT])
(;B[df];W[dh]))
(;B[ci];W[bi])))
(;B[ah];W[ag])
(;B[bi];W[fi];B[di];W[dh])
(;B[fi];W[ag]
(;B[di];W[dh]
(;B[ei];W[ci];B[gi];W[ai])
(;B[gi];W[ei]))
(;B[ei];W[di];B[dh];W[eh];B[bi];W[ai]C[ko])
(;B[gi];W[di])
(;B[dh];W[di])
(;B[ai];W[ei]
(;B[dh];W[di]
(;B[bi]C[RIGHT])
(;B[df];W[bi]C[ko]))
(;B[bi];W[dh];B[ci]C[
However, bend-four-in-the-corner is an inferior way to kill - if black is forced to take off the stones, there is the ko to worry about.RIGHT])
(;B[di];W[dh])
(;B[ci];W[bi])))
(;B[dh];W[di]
(;B[fi];W[bi])
(;B[ag];W[fi])
(;B[df];W[dh]
(;B[fi];W[bi])
(;B[ag];W[fi]))))
(;B[ah];W[bh]
(;B[fi]
(;W[dh]
(;B[ei];W[di]
(;B[bi]C[RIGHT])
(;B[af];W[ag];B[bi];W[gi];B[fi];W[ci])
(;B[gi];W[bi]))
(;B[bi];W[ei]
(;B[ci];W[ag])
(;B[af];W[ag]))
(;B[af];W[ag]
(;B[ei];W[ai])
(;B[bi];W[ci])))
(;W[ei];B[dh];W[di];B[bi]C[RIGHT]))
(;B[bi];W[fi]
(;B[df];W[dh])
(;B[di];W[dh]
(;B[ci];W[ag])
(;B[af];W[ag]))
(;B[ci];W[di]))
(;B[di];W[dh]
(;B[fi];W[ei])
(;B[af];W[ag]))
(;B[dh];W[di]
(;B[bi];W[fi])
(;B[fi];W[bi])))
(;B[bi];W[bh];B[fi];W[af]
(;B[ah];W[ei]
(;B[dh]C[RIGHT])
(;B[df];W[dh]C[White gets a seki.])
(;B[ci];W[dh]C[Seki])
(;B[di];W[dh]))
(;B[ei];W[ci];B[ah];W[ag])
(;B[dh];W[ah])
(;B[di];W[ci]))
(;B[ag];W[ah])
(;B[ci];W[bi])
(;B[df];W[ah]
(;B[dh];W[bi])
(;B[bi];W[af])
(;B[af];W[bi]))
(;B[dh];W[ah]
(;B[bi];W[di]
(;B[bh];W[ci]
(;B[af];W[ai]
(;B[fi]C[RIGHT])
(;B[ae];W[fi]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh]))
(;B[df];W[fi]C[ko]))
(;B[fi];W[af])
(;B[ae];W[fi]
(;B[af];W[ai]
(;B[bh];W[bi];B[ag]C[RIGHT])
(;B[ag];W[bh]))
(;B[df];W[ai]C[ko])
(;B[ag];W[ai]
(;B[bh];W[bi];B[af]C[RIGHT])
(;B[af];W[bh])))
(;B[df];W[fi]C[ko]))
(;B[fi];W[af];B[bh];W[ci])
(;B[af];W[fi];B[bh]C[RIGHT])
(;B[ag];W[af])
(;B[df];W[fi]C[ko]))
(;B[di];W[bi])
(;B[df];W[bi])
(;B[af];W[bi]))
(;B[di];W[ah]
(;B[bi];W[dh]
(;B[af];W[ci])
(;B[bh];W[ci];B[af];W[ai])
(;B[ci];W[af]))
(;B[dh];W[bi])
(;B[af];W[bi])
(;B[ci];W[bi]))
(;B[fi];W[ah]
(;B[bi];W[af]
(;B[ci];W[di])
(;B[bh];W[ci])
(;B[di];W[ci])
(;B[ae];W[ci]))
(;B[di];W[bi])
(;B[ci];W[bi];B[di];W[dh])))
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