(;AB[as]AB[ar]AB[aq]AB[ap]AW[bs]AW[br]AW[bq]AW[cq]AW[dr]AW[er]AW[eq]AW[fq]AW[gr]AB[fr]AB[bp]AB[cp]AB[dp]AB[dq]AB[ep]AB[fp]AB[gq]AB[hq]AB[ir]AB[jq]AW[gs]AB[gp]C[Black can't kill White but has the best result.FORCE]AP[goproblems]
(;B[fs]C[FORCE];W[hs]C[FORCE]
(;B[hr]C[FORCE];W[es]C[FORCE];B[is])
(;B[is]C[FORCE];W[es]C[FORCE];B[hr]))
(;B[hr]C[FORCE];W[hs]C[FORCE];B[is]C[FORCE];W[fs])
(;B[hs]C[RIGHT])
(;B[is]C[FORCE]
(;W[hr]C[FORCE];B[hs]C[FORCE];W[fs])
(;W[hs]C[FORCE];B[hr]C[FORCE];W[fs])))