(;AB[as]AB[br]AB[cq]AB[dr]AW[ar]AW[aq]AW[bq]AW[dp]AW[dq]AW[eq]AW[er]AB[cp]AW[fr]AW[fs]AW[bp]AB[co]AW[bo]AW[ao]AW[bn]AW[bm]AW[am]AB[cn]AB[cm]AB[dm]AB[em]AB[en]AB[eo]AB[do]AB[bl]AB[al]AB[ak]AB[aj]AB[cj]AB[bj]AB[ck]AB[cl]AB[fo]AB[fp]AB[gp]AB[gq]AB[hq]AB[hr]AB[hs]AW[ds]C[Not to let White connect.FORCE]AP[goproblems]
(;B[bs]C[FORCE];W[cr])
(;B[cr]C[FORCE];W[bs]C[FORCE];B[cs]C[FORCE];W[as]C[RIGHT])
(;B[cs]C[FORCE];W[cr]))