(;AB[sa]AW[ra]AW[se]AW[re]AW[pd]AW[pb]AW[pa]AB[oa]AB[ob]AB[oc]AB[od]AB[oe]AB[of]AB[pf]AB[qf]AB[rf]AB[sf]AW[pc]AW[pe]AW[rb]AW[rc]AB[sd]C[Black can't kill White but has the best result.FORCE]AP[goproblems]
(;B[qa]C[FORCE];W[qe])
(;B[qb]C[FORCE];W[qe])
(;B[qc]C[FORCE];W[qe])
(;B[qd]C[FORCE];W[qe])
(;B[rd]C[FORCE];W[qe])
(;B[qe]C[FORCE];W[rd]C[FORCE]
(;B[qa]C[FORCE];W[qd])
(;B[qb]C[FORCE];W[qd])
(;B[qc]C[FORCE];W[qd])
(;B[qd]C[FORCE];W[qc]C[RIGHT])))