(;AB[cs]AB[cr]AB[cq]AB[bp]AB[bo]AB[ao]AW[bn]AW[cm]AW[co]AW[cp]AW[dq]AW[dr]AW[ds]AW[ep]AP[goproblems]
(;W[br];B[bq];W[aq]LB[bs:A]LB[ar:B];B[bs];W[ar]C[RIGHT])
(;W[aq];B[br];W[ar];B[as]LB[bs:A])
(;W[ar];B[aq];W[bs];B[bq];W[an]C[Only seki, but White can kill Black]))