(;AW[ar]AW[bs]AW[cr]AW[cq]AW[cp]AW[bp]AB[bq]AB[bo]AB[bn]AB[an]AB[co]AB[do]AB[dp]AB[dq]AB[dr]AB[ds]AW[cs]C[Black can't kill White but has the best result.FORCE]AP[goproblems]
(;B[ao]C[FORCE];W[ap])
(;B[ap]C[FORCE];W[aq]C[FORCE];B[ao]C[RIGHT])
(;B[aq]C[FORCE];W[ap]))