(;AB[cr]AB[dr]AB[dq]AB[bq]AB[bp]AB[ap]AW[ao]AW[bo]AW[cp]AW[cq]AW[co]AW[cs]AW[es]AW[er]AW[eq]AW[ep]AW[fn]AP[goproblems]
(;B[ar]
(;W[ds];B[bs]C[RIGHT];W[dp];B[br]C[RIGHT])
(;W[bs];B[ds]))
(;B[bs]
(;W[ds]C[This is a mistake for White];B[ar];W[dp];B[br]C[RIGHT])
(;W[ar]C[CHOICE];B[br];W[ds]))
(;B[ds];W[br]))