invalid problem set
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life and death
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Problem | 18939 |
Created | 2014-12-26 |
Source | Tsumego Pro Android |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 31 secs |
User Attempts |
32 / 170 |
Solve Ratio Rating | 1 kyu |
| rating history |
Save the marked stones unconditionnally. Ko is not a solution.
(;AB[bg]AB[cg]AB[dg]AB[fg]AB[ef]AW[df]AW[bf]AW[de]AB[ee]AB[ed]AW[fd]AW[dd]AW[bd]AB[bc]AB[cc]AB[dc]AW[ec]AW[fb]AW[db]AW[bb]TR[bc]TR[cc]TR[dc]AP[goproblems]
(;B[ad];W[ae]
(;B[cd];W[ce]
(;B[cf];W[ac];B[be]C[RIGHT])
(;B[be]C[unnecessary ko]))
(;B[ce];W[ac]
(;B[cd];W[cf])
(;B[cf];W[cd]))
(;B[ac];W[cb];B[cd];W[ce];B[be]C[ko]))
(;B[cd];W[ce];B[ad];W[be])
(;B[ae];W[cd];B[ad];W[cb];B[ac];W[af]
(;B[cf];W[be])
(;B[be];W[ab]))
(;B[be];W[cd];B[ad];W[cb];B[ac];W[ab];B[ae];W[af])
(;B[ce];W[cd])
(;B[cf];W[be]
(;B[af];W[ac])
(;B[ac];W[cb]))
(;B[af];W[ac])
(;B[ac];W[cb]
(;B[ad];W[ae];B[cd];W[ce];B[be]C[ko])
(;B[cd];W[ce]
(;B[ad];W[be])
(;B[cf];W[be])
(;B[be];W[ae]))
(;B[be];W[cd];B[ad];W[ab];B[ae];W[af])
(;B[ae];W[ab];B[be];W[cd];B[ad];W[af]))
(;B[cb];W[ca];B[ba];W[aa];B[ac];W[cd]))
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