(;AB[cs]AB[cr]AB[br]AB[cq]AB[dp]AB[ds]AB[er]AB[eq]AW[bo]AW[co]AW[do]AW[ep]AW[fo]AW[fq]AW[fr]AW[fs]AW[es]AP[goproblems]
(;W[aq]C[CHOICE];B[ar];W[dq];B[dr];W[cp]C[RIGHT])
(;W[dq]C[This is a mistake by White]
(;B[bp]
(;W[cp];B[ap]LB[aq:A]LB[ar:B]LB[as:C])
(;W[aq];B[ap];W[ar];B[as]))
(;B[cp];W[aq];B[ar];W[dr]C[RIGHT])))