(;AB[bp]AB[bn]AB[cp]AB[dp]AB[ep]AB[fp]AB[gp]AB[hp]AB[ip]AB[iq]AB[hr]AB[gr]AB[fr]AB[ds]AW[br]AW[bq]AW[cq]AW[dq]AW[eq]AW[fq]AW[gq]AW[hq]AW[cs]C[black to kill or to make ko, at least]AP[goproblems]
(;B[aq]
(;W[ar]C[CHOICE]
(;B[bs]
(;W[dr]C[CHOICE];B[cr]C[yes, ko is the best b can get hereRIGHT])
(;W[as];B[dr];W[er];B[es];W[fs];B[gs]
(;W[ap];B[ir]C[RIGHT])
(;W[cr];B[bs]C[RIGHT])))
(;B[dr];W[er];B[es];W[fs];B[gs];W[cr])
(;B[er];W[dr])
(;B[es];W[dr]))
(;W[as];B[ap];W[ar];B[dr];W[er];B[es];W[fs];B[gs]C[RIGHT]))
(;B[bs];W[as])
(;B[es];W[dr])
(;B[dr];W[er];B[es];W[fs])
(;B[ar];W[aq]))