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life and death
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+7
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Problem | 1526 |
Created | 2002-05-29 |
Source | |
Rating | |
Difficulty | 10.9 kyu |
Average Solve Time | 40 secs |
User Attempts |
4429 / 12932 |
Solve Ratio Rating | 5 kyu |
| rating history |
This shape appeared when I was playing an amateur game
(;AW[qa]AW[ob]AW[nc]AW[pc]AW[od]AW[qd]AW[re]AB[pb]AB[rb]AB[qc]AB[sc]C[Black to live]AW[rf]
(;B[rd];W[qb]
(;B[qe];W[pd])
(;B[ra];W[pa]))
(;B[pa];W[rd]
(;B[ra];W[rc]
(;B[qb];W[sb])
(;B[sb];W[qb]))
(;B[rc];W[ra]
(;B[sa];W[sb]
(;B[qb]C[RIGHT])
(;B[sa]C[This move is forbidden by the ko rule!])
(;B[oa];W[na]
(;B[sa]C[];W[qb])
(;B[qb];W[sd]))
(;B[na];W[oa]
(;B[sa];W[qb])
(;B[qb];W[sd]))
(;B[pd]C[NOTTHIS]))
(;B[qb];W[sa]))
(;B[sa];W[rc])
(;B[qb];W[rc]C[Black cannot get two eyes.]))
(;B[qb];W[pa]
(;B[rd];W[ra])
(;B[ra];W[rd];B[oa];W[pa]))
(;B[ra];W[rd];B[pa];W[rc]
(;B[qb];W[sb])
(;B[sb];W[qb])))
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