invalid problem set
Problem | 16019 |
Created | 2012-04-30 |
Source | Maeda Elementary Tsumego 162 |
Rating | |
Difficulty | 4.1 dan |
Average Solve Time | 47 secs |
User Attempts |
93 / 335 |
Solve Ratio Rating | 3 kyu |
| rating history |
(;AB[bc]AB[bd]AB[cd]AB[dd]AB[ed]AB[fd]AB[gc]AB[hc]AB[ic]AB[ib]AW[cc]AW[cb]AW[ea]AW[fb]AW[gb]AW[hb]C[Black to kill]AP[goproblems]
(;B[ec];W[eb]
(;B[ca];W[bb]
(;B[ab]
(;W[da]C[CHOICE];B[dc];W[db];B[ba];W[aa];B[ba]C[RIGHT])
(;W[ba]C[CHOICE];B[db];W[da];B[dc]C[RIGHT]))
(;B[db];W[dc];B[ab];W[da];B[ba];W[aa];B[ba]))
(;B[dc];W[db])
(;B[bb];W[ca])
(;B[db];W[dc];B[ca];W[bb];B[ab];W[da];B[ba];W[aa];B[ba]))
(;B[bb];W[ca]
(;B[dc];W[db])
(;B[ec];W[eb])
(;B[eb];W[ec];B[dc];W[db]))
(;B[dc];W[db])
(;B[db];W[dc]
(;B[ec];W[eb];B[ca];W[bb];B[ab];W[da];B[ba];W[aa];B[ba])
(;B[bb];W[da])
(;B[eb];W[ec]
(;B[fc];W[da])
(;B[ha];W[ga];B[fc];W[da]))
(;B[ca];W[ec]
(;B[bb];W[da])
(;B[da];W[bb])))
(;B[ha];W[ga])
(;B[eb];W[ec];B[dc];W[db])
(;B[ca];W[ec];B[dc];W[db];B[fc];W[bb]
(;B[ab];W[ba]
(;B[ha];W[ga];B[eb]C[Fault. It's a Ko.])
(;B[eb]C[Fault. It's a Ko.]))
(;B[eb]C[Fault. It's a Ko.]))
(;B[ba];W[ca]
(;B[ec];W[eb])
(;B[dc];W[db])
(;B[db];W[dc];B[eb];W[ec])))
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