(;AB[aq]AB[bq]AB[cp]AB[dp]AB[bo]AB[eq]AB[fq]AB[fr]AW[es]AW[er]AW[dq]AW[cq]AW[br]AW[ar]AP[goproblems]
(;B[cr];W[dr];B[cs]LB[bs:A]LB[ds:B]C[White cannot play A or BRIGHT])
(;B[cs];W[cr];B[fs]
(;W[bs]LB[dr:A]LB[bs:B]C[If White plays B at A, Black plays B and winCHOICE])
(;W[dr];B[bs])))