(;AW[bs]AW[br]AW[bq]AW[aq]AW[dq]AW[dr]AW[ds]AB[es]AB[er]AB[ep]AB[eq]AB[dp]AB[cp]AB[bp]AB[ap]C[Black is impossible to kill White but has the best result.FORCE]AP[goproblems]
(;B[cq]C[FORCE];W[cr]C[RIGHT])
(;B[cr]C[FORCE];W[cq])
(;B[cs]C[FORCE];W[cq]))