(;AB[sb]AB[rb]AB[rc]AB[qc]AB[pd]AB[od]AB[nc]AB[nb]AB[nf]AW[pa]AW[pb]AW[pc]AW[qd]AW[rd]AW[sd]AW[pe]AW[qf]AP[goproblems]
(;B[oc];W[ra]
(;B[oa];W[sc];B[ob];W[qa]C[sekiCHOICE])
(;B[ob];W[sc];B[oa];W[qa]C[sekiCHOICE]))
(;B[ra];W[sc]
(;B[oc];W[qb]
(;B[oa]C[RIGHT])
(;B[ob]C[RIGHT]))
(;B[ob];W[qb]
(;B[oc]C[RIGHT])
(;B[oa]C[RIGHT]))
(;B[oa];W[qb]
(;B[ob]C[RIGHT])
(;B[oc]C[RIGHT])))
(;B[oa];W[ra]
(;B[oc];W[sc];B[ob];W[qa]C[sekiCHOICE])
(;B[ob];W[sc];B[oc];W[qa]C[sekiCHOICE]))
(;B[ob];W[ra];B[oa];W[sc];B[oc];W[qa]C[sekiCHOICE]))