(;AB[br]AB[cr]AB[dq]AB[eq]AB[ep]AB[eo]AB[dn]AB[dm]AB[dl]AB[cl]AB[bl]AW[bm]AW[cm]AW[do]AW[co]AW[dp]AW[cq]AW[bq]AP[goproblems]
(;W[bp];B[bn];W[cn];B[am]
(;W[ao];B[an]
(;W[aq]LB[bo:A]C[RIGHT])
(;W[bo]C[RIGHT];B[al];W[aq]C[RIGHT]))
(;W[bo]C[RIGHT];B[an];W[ao];B[al];W[aq]C[RIGHT]))
(;W[bo];B[cn];W[bn];B[am];W[an];B[ap]LB[aq:A]LB[bp:B]
(;W[aq];B[bp])
(;W[bp];B[aq]))
(;W[cn];B[bp];W[aq];B[bo];W[ao]
(;B[am]LB[bn:A]C[CHOICE])
(;B[bn]C[mistake for Black];W[am]))
(;W[ao];B[bp]
(;W[bo];B[aq];W[ap];B[cp])
(;W[cp];B[bo];W[bn];B[cn];W[ap];B[am])
(;W[ap];B[bo];W[cp];B[bn];W[cn];B[am];W[an];B[bo])
(;W[aq];B[ap];W[bo];B[ar];W[cp];B[cn]
(;W[bn];B[am])
(;W[am];B[bn]))))