(;AB[sd]AB[rd]AB[re]AB[qc]AB[qb]AB[qa]AB[pb]AB[oa]AW[na]AW[nb]AW[ob]AW[oc]AW[pc]AW[pd]AW[qd]AW[qf]AW[qe]AW[rf]AW[sf]C[What can white do here?]AP[goproblems]
(;W[pa];B[sb]C[:T])
(;W[se];B[sb]C[:T])
(;W[rc];B[sb])
(;W[sc];B[sb])
(;W[sb];B[rb]
(;W[ra];B[sc])
(;W[sa];B[sc])
(;W[sc];B[sa];W[ra];B[rc]C[oho!])
(;W[pa];B[sc])
(;W[se];B[sa];W[ra]C[Ko. This is the best white can do.RIGHT]))
(;W[rb];B[sb]
(;W[rc];B[ra])
(;W[ra];B[rc])))