(;AB[pq]AB[oq]AB[nq]AB[po]AB[on]AB[nm]AB[nl]AB[ml]AW[mm]AW[mn]AW[mp]AW[mq]AW[np]AW[qq]AW[qp]AW[qo]AW[qn]C[White to cut black in two.]AP[goproblems]
(;W[oo];B[pn];W[pp];B[op];W[no]C[RIGHT])
(;W[nn];B[oo];W[om];B[pm]C[The ladder works. Black stays connected.])
(;W[op];B[pp])
(;W[pp];B[op])
(;W[pn];B[oo])
(;W[om];B[oo];W[nn];B[pm]C[The ladder works. Black stays connected.]))