(;AB[cs]AB[cr]AB[cq]AB[cp]AB[co]AB[bo]AB[ap]AW[ao]AW[an]AW[bn]AW[cn]AW[dn]AW[do]AW[dp]AW[dq]AW[dr]AW[ds]AP[goproblems]
(;W[ar]
(;B[bq];W[aq];B[br];W[bp]C[RIGHT])
(;B[br];W[aq];B[bq];W[bp]C[RIGHT]))
(;W[bq]
(;B[ar]LB[br:A]LB[bp:B]LB[bs:C]
(;W[br]
(;B[bp])
(;B[bs]C[CHOICE]))
(;W[bp];B[aq])
(;W[aq];B[br];W[bp];B[ap]))
(;B[br];W[ar];B[bp];W[bs];B[as];W[es];B[aq])
(;B[bp];W[bs]))
(;W[aq]
(;B[ar]C[CHOICE];W[bp];B[bq];W[ap];B[bs])
(;B[bq]C[Black mistake];W[ar];B[br];W[bp])
(;B[bp]C[Black mistake];W[br];B[bs];W[ar])))