Problem | 8034 |
Created | 2006-01-31 |
Source | Salvaging problem 8026 |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 33 secs |
User Attempts |
85 / 1097 |
Solve Ratio Rating | 4 dan |
| rating history |
(;AB[da]AB[db]AB[cc]AB[cd]AB[ce]AB[be]AW[bb]AB[bc]AW[ea]AW[eb]AW[dd]AW[de]AW[bf]AW[cf]AW[df]AW[ec]LB[ch:A]LB[eh:B]C[Assuming that it's white's turn...what is black's status? A = Black is alive unconditionally, B = ko, C = seki, D = Death]LB[ci:C]LB[ei:D]AP[goproblems]
(;B[ch];W[ad]C[hmmm....]
(;B[cb]
(;W[ae];B[ba]C[This is the best solution for both.RIGHT])
(;W[ac]C[CHOICE]
(;B[ba]
(;W[ae];B[ab]C[RIGHT])
(;W[ab]C[CHOICE];B[ae];W[af];B[bd]C[CHOICERIGHT]))
(;B[ae];W[aa]
(;B[ca]C[aliveRIGHT])
(;B[bd];W[dc];B[ca];W[af];B[ab];W[ac]C[dead])
(;B[ba]C[ko]))))
(;B[ae];W[cb];B[dc];W[ac];B[ba];W[ab];B[ca];W[af]C[seki])
(;B[ac];W[cb];B[dc];W[ae]C[dead])
(;B[ba]
(;W[ab];B[cb]C[RIGHT])
(;W[ac]C[CHOICE]
(;B[cb];W[ae];B[ab]C[RIGHT])
(;B[ae];W[cb]
(;B[ab];W[aa]C[ko])
(;B[ca];W[ab];B[dc];W[af]C[seki])))
(;W[cb];B[ab]C[RIGHT]))
(;B[ab];W[ac]
(;B[cb];W[aa];B[ae];W[af]
(;B[ba];W[ca]C[ko])
(;B[ca];W[dc]C[seki])
(;B[bd];W[dc];B[ab];W[ac]C[ko or seki in future.]))
(;B[ba];W[aa];B[cb];W[ca]C[ko]))
(;B[aa];W[ae]C[dead])
(;B[ca];W[ae]C[dead])
(;B[dc];W[ae]C[dead])
(;B[bd];W[cb]
(;B[dc];W[ae]
(;B[ba];W[ab]C[dead])
(;B[ab];W[ba]C[dead]))
(;B[ba];W[dc]C[dead])))
(;B[eh])
(;B[ci])
(;B[ei]))
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