(;AB[ra]AB[qa]AB[pa]AB[sd]AB[rd]AB[qd]AB[pd]AW[sa]AW[oa]AW[od]AW[qe]AW[pe]AW[re]AW[oe]AW[ob]AW[nc]AP[goproblems]
(;W[pb];B[sb])
(;W[rb];B[qb];W[sb];B[pc];W[pb];B[rc];W[qc];B[qb];W[qa];B[sc]LB[qc:ko?]
(;W[ra];B[pa];W[ra]C[RIGHT])
(;W[qc]))
(;W[pc];B[sb])
(;W[qc];B[sb])
(;W[sb];B[pb];W[pc];B[qc];W[rb];B[oc])
(;W[qb];B[rb])
(;W[rc];B[qc])
(;W[sc];B[sb]))