(;AB[br]AB[bp]AB[co]AB[do]AB[eo]AB[fo]AB[fp]AB[fq]AB[gq]AB[hp]AB[ip]AB[jp]AB[kp]AB[lr]AB[dq]AW[cr]AW[cq]AB[bq]AW[cp]AW[dp]AW[ep]AW[eq]AW[fr]AW[gr]AW[hq]AW[iq]AW[jq]AW[jr]AW[is]AB[hr]AB[kq]AB[kr]AB[cs]C[black to kill]AB[dr]AW[er]AP[goproblems]
(;B[ds]
(;W[es]C[CHOICE]
(;B[gs];W[bs]
(;B[ks];W[hs];B[js]C[RIGHT])
(;B[hs]))
(;B[hs];W[bs];B[gs];W[fs])
(;B[ks];W[hs])
(;B[bs];W[hs]))
(;W[hs];B[es]C[RIGHT]))
(;B[es];W[ds];B[dr];W[fs]
(;B[hs];W[ds]C[ko])
(;B[ds];W[hs]))
(;B[hs];W[ds])
(;B[gs];W[ds])
(;B[bs];W[ds])
(;B[fs];W[ds])
(;B[ks];W[ds]))