(;AB[bq]AB[bp]AB[cp]AB[dp]AB[eq]AB[fq]AB[gq]AB[gr]AB[hr]AB[hs]AW[cr]AW[cq]AW[dq]AW[er]AW[fr]AW[fs]AW[gs]AW[bo]AW[co]AW[do]AW[eo]AW[ep]AW[ir]AW[iq]AW[kr]AW[hp]AW[go]C[black to live]AP[goproblems]
(;B[ds]
(;W[br]C[CHOICE]
(;B[dr];W[cs]
(;B[ar];W[es]
(;B[dr]
(;W[ds]C[CHOICE];B[bs]C[yes, - ko is the best that black can get hereRIGHT])
(;W[ap];B[ds];W[aq];B[fs]C[RIGHT]))
(;B[bs];W[ap])
(;B[ds];W[dr];B[bs]C[yes, - ko is the best that black can do here.RIGHT]))
(;B[es];W[fs]))
(;B[es];W[dr])
(;B[ar];W[dr])
(;B[bs];W[ar];B[dr];W[cs];B[es];W[fs]))
(;W[cs];B[bs];W[br];B[ar]C[RIGHT]))
(;B[bs];W[ds])
(;B[br];W[ds])
(;B[cs];W[ds]))