(;AW[rd]AW[rc]AW[qc]AW[pb]AW[ob]AB[oa]AB[nb]AB[nc]AB[oc]AB[pc]AB[qd]AB[qe]AB[re]AB[rg]C[White to live. Ko is failure]AP[goproblems]
(;W[qa]
(;B[sb]C[CHOICE]
(;W[rb];B[na]
(;W[sc]
(;B[pa]C[CHOICE]
(;W[sa];B[qb];W[pb]C[RIGHT])
(;W[qb];B[sa])
(;W[se];B[sa]))
(;B[sa];W[pa]C[RIGHT]))
(;W[sa]
(;B[ra]C[CHOICE]
(;W[sc];B[pa];W[sa];B[qb];W[pb]C[RIGHT])
(;W[pa];B[qb])
(;W[se];B[pa]C[You could avoid Ko]))
(;B[pa]
(;W[qb];B[ra]C[You could avoid Ko])
(;W[sc];B[qb];W[pb]C[RIGHT])))
(;W[pa];B[ra]C[You could avoid Ko])
(;W[sd];B[pa]
(;W[qb];B[sa])
(;W[sa];B[ra]C[You could avoid Ko])
(;W[se];B[sa]))
(;W[ra];B[pa])
(;W[se];B[pa]
(;W[sa];B[ra]C[You could avoid Ko])
(;W[sd];B[sa]))
(;W[qb];B[sa]))
(;W[sd];B[rb])
(;W[sc];B[rb])
(;W[ra];B[rb])
(;W[pa];B[rb])
(;W[sa];B[rb])
(;W[se];B[rb]))
(;B[sd]
(;W[rb]C[RIGHT])
(;W[sc];B[rb])
(;W[sb];B[ra];W[rb];B[na])
(;W[pa];B[rb])
(;W[ra];B[sb]))
(;B[rb];W[sb];B[ra];W[sd];B[na];W[qb]C[RIGHT])
(;B[ra];W[rb]C[RIGHT]))
(;W[rb];B[qa]
(;W[pa];B[qb])
(;W[ra];B[na]
(;W[pa];B[qb])
(;W[qb];B[pa])
(;W[sd];B[sb])
(;W[sb];B[sd]))
(;W[qb];B[pa];W[ra];B[na])
(;W[sd];B[pa])
(;W[se];B[pa])
(;W[sb];B[pa])
(;W[sc];B[pa]))
(;W[qb];B[sd]
(;W[ra];B[sb])
(;W[sb];B[ra])
(;W[sc];B[ra])
(;W[pa];B[ra]))
(;W[pa];B[qb])
(;W[ra];B[qb])
(;W[sb];B[qb])
(;W[sd];B[qb])
(;W[sc];B[qb])
(;W[se];B[qb]))