invalid problem set
Problem | 4570 |
Created | 2004-06-02 |
Source | |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 63 secs |
User Attempts |
175 / 1672 |
Solve Ratio Rating | 3 dan |
| rating history |
Many thanks to Zenit, bass, tigre, blyx, romi,zinger and especially tails for their comments.
If there are any errors please comment.
(;AB[cd]AW[ec]AB[dc]AW[ed]AW[dd]AB[cb]AW[ce]AB[bd]AW[be]AW[df]AW[bc]AW[bg]AW[gc]AW[hb]AW[ib]AB[gf]AB[fg]AB[hf]C[]AP[goproblems]
(;B[cc];W[bb]
(;B[ad];W[eb])
(;B[ba];W[ab])
(;B[eb];W[ad]
(;B[fb];W[ca])
(;B[ba];W[ac])
(;B[ac];W[ab])
(;B[ab];W[ac]))
(;B[ac];W[ab]
(;B[ba];W[ad])
(;B[ad];W[eb]))
(;B[ab];W[ba]
(;B[ac];W[eb];B[db];W[da])
(;B[eb];W[fb]
(;B[da];W[fa]
(;B[ac]
(;W[ea]
(;B[db];W[ae];B[ad]C[seki!RIGHT])
(;B[ad];W[db])
(;B[ca]))
(;W[ae]
(;B[ea];W[ad]C[It's not a seki as white can capture a17/a18 and connect out])
(;B[ad];W[ea])))
(;B[ea];W[ca])
(;B[ca];W[ea])
(;B[ad];W[ea]))
(;B[ca];W[ea])
(;B[ac];W[ea]
(;B[db];W[da])
(;B[da];W[db]C[Black cannot win this one]))
(;B[ad];W[ea]
(;B[db];W[da])
(;B[da];W[db]))
(;B[ea];W[ca]
(;B[da];W[ad];B[db];W[fa])
(;B[db];W[ad];B[ac];W[ae])
(;B[ac];W[fa]
(;B[da];W[db])
(;B[db];W[ae];B[ad]C[seki!RIGHT]))
(;B[ad];W[fa];B[db];W[ac])))
(;B[ad];W[eb])))
(;B[bb];W[ad]
(;B[cc];W[ab]
(;B[ac]C[Unfavourable ko for black.])
(;B[eb];W[ac]
(;B[da];W[ba];B[fb];W[fa])
(;B[fb];W[da])
(;B[ba];W[da])))
(;B[eb];W[cc])
(;B[ab];W[cc])
(;B[ac];W[cc]))
(;B[eb];W[cc];B[bb];W[ad])
(;B[ac];W[bb]
(;B[ab];W[ba];B[cc];W[eb];B[db];W[da])
(;B[ba];W[ab])
(;B[cc];W[ab]
(;B[ba];W[ad])
(;B[ad];W[eb]))))
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