(;AB[rd]AB[qd]AB[pd]AB[od]AB[oc]AB[ob]AB[oa]AW[pb]AW[pc]AW[qc]AW[qa]AW[rb]AW[sb]AB[ra]C[Black to kill !!!]AP[goproblems]
(;B[rc]C[Good Job!!!RIGHT])
(;B[pa];W[rc];B[qb]C[Ko is not the solution you can do better !!!])
(;B[sc]C[Sorry];W[rc])
(;B[sd]C[No :-(];W[pa]))