(;AW[br]AW[cr]AW[bq]AW[bp]AW[dp]AW[cp]AW[dq]AW[dr]AW[er]AW[ep]AW[gp]AW[gr]AW[hr]AW[hq]AW[hp]AW[ip]AW[jp]AW[jq]AW[jr]AW[ir]AB[bs]AB[as]AB[ar]AB[aq]AB[ap]AB[ao]AB[bo]AB[co]AB[do]AB[eo]AB[fo]AB[go]AB[ho]AB[io]AB[jo]AB[ko]AB[kp]AB[kq]AB[kr]AB[ks]AB[js]AB[is]AB[hs]AB[gs]AB[fs]AB[es]AB[ds]AB[cs]C[Black is impossible to kill White but has the best result.FORCE]AP[goproblems]
(;B[fq]C[FORCE]
(;W[fp]C[FORCE]
(;B[eq]C[FORCE];W[fr])
(;B[gq]C[FORCE];W[fr])
(;B[fr]C[RIGHT]))
(;W[fr]C[FORCE]
(;B[eq]C[FORCE];W[fp])
(;B[fp]C[RIGHT])
(;B[gq]C[FORCE];W[fp])))
(;B[fp]C[FORCE];W[fq])
(;B[gq]C[FORCE]
(;W[fp]C[FORCE];B[fr]C[FORCE];W[fq])
(;W[fq])
(;W[fr]C[FORCE];B[fp]C[FORCE];W[fq]))
(;B[fr]C[FORCE];W[fq])
(;B[eq]C[FORCE]
(;W[fp]C[FORCE];B[fr]C[FORCE];W[fq])
(;W[fq])
(;W[fr]C[FORCE];B[fp]C[FORCE];W[fq])))