(;AB[cr]AB[cq]AW[cp]AW[bp]AB[dp]AB[cn]AB[bn]AB[ep]AB[fp]AB[gp]AB[hq]AB[hr]AW[dq]AW[dr]AW[eq]AW[fq]AB[jr]C[black to kill]AP[goproblems]
(;B[bq]
(;W[ar]C[CHOICE]
(;B[bs];W[aq]
(;B[es]
(;W[ds]C[CHOICE];B[br]C[RIGHT])
(;W[br];B[ds]C[RIGHT]))
(;B[br];W[es]
(;B[co];W[cs]C[ko])
(;B[bo];W[cs]C[ko])
(;B[ao];W[cs]C[ko])
(;B[fr];W[cs]C[ko]))
(;B[co];W[br])
(;B[bo];W[br])
(;B[ao];W[br])
(;B[ds];W[es]C[ko])
(;B[cs];W[ds])
(;B[ap]))
(;B[aq];W[cs]
(;B[bs];W[ds])
(;B[br];W[ap]))
(;B[br];W[bs]C[]
(;B[aq];W[cs];B[as];W[ds])
(;B[cs];W[aq];B[as];W[ap])
(;B[ap];W[cs]))
(;B[es];W[bs]
(;B[ap];W[aq])
(;B[aq];W[cs])
(;B[ds];W[cs])
(;B[cs];W[ds]))
(;B[bo];W[aq];B[co];W[ap])
(;B[co];W[aq])
(;B[ao];W[aq])
(;B[cs];W[aq])
(;B[ap];W[aq];B[bs];W[cs];B[ds];W[es]C[ko])
(;B[ds];W[es];B[cs];W[bs]
(;B[fs];W[fr]
(;B[er];W[gs])
(;B[gs];W[aq]C[ko]))
(;B[fr];W[aq])
(;B[aq];W[ap])
(;B[br];W[aq])))
(;W[br]C[this is a 'side' variation, the actual w's move is a2]TR[ar];B[bs];W[ar];B[aq]C[];W[ap];B[as];W[ds];B[co]C[RIGHT]))
(;B[bs];W[bq]
(;B[br];W[ar]
(;B[ap];W[cs];B[ds];W[es])
(;B[cs];W[ap])
(;B[fr];W[ds]
(;B[ap];W[cs])
(;B[cs];W[as]
(;B[cr];W[ap])
(;B[ap];W[cr]))))
(;B[ds];W[es])
(;B[cs];W[br])
(;B[ar];W[br])
(;B[fr];W[br]))
(;B[ar];W[br];B[bq];W[bs]
(;B[cs];W[ap]
(;B[co];W[aq];B[as];W[br])
(;B[bo]C[NOTTHIS])
(;B[ao]C[NOTTHIS])
(;B[ds];W[es];B[as];W[aq]
(;B[fs];W[fr]C[thanks to blbn]
(;B[er];W[gs])
(;B[gs];W[br]C[ko]))
(;B[co];W[br])
(;B[fr];W[br]))
(;B[fr];W[ds];B[as];W[aq]))
(;B[ap];W[cs]
(;B[ao];W[aq];B[bq];W[es]
(;B[cq];W[fr])
(;B[fr];W[cq]))
(;B[bo];W[aq];B[bq];W[es]
(;B[cq];W[fr])
(;B[fr];W[cq]))))
(;B[br];W[ar]
(;B[aq];W[ap]
(;B[bq];W[cs])
(;B[as];W[bq]C[ko]))
(;B[bq])
(;B[bs];W[bq]))
(;B[aq];W[bq]C[]
(;B[br];W[cs])
(;B[ar];W[br]))
(;B[ds];W[es]
(;B[cs];W[bq];B[fs];W[br];B[er];W[bs])
(;B[bs];W[bq]
(;B[fs];W[gs]
(;B[fr];W[br]
(;B[er];W[cs];B[cr];W[gr])
(;B[gr];W[cs]))
(;B[er];W[fr]))
(;B[br];W[ar]C[ko]))
(;B[fr];W[cs]
(;B[bs];W[br];B[ds];W[bq])
(;B[br];W[bs]
(;B[ar];W[aq])
(;B[bq];W[ar])
(;B[gq];W[ar]))
(;B[bq];W[br])))
(;B[cs];W[ds]
(;B[bq];W[ap])
(;B[ar];W[bq]))
(;B[es];W[ds]
(;B[bq];W[br])
(;B[br];W[bq]
(;B[cs];W[bs])
(;B[bs];W[cs])
(;B[ar];W[cs]
(;B[ap];W[bs])
(;B[aq];W[ap])
(;B[fr];W[aq])))
(;B[bs];W[bq])
(;B[aq];W[bq]
(;B[br];W[bs])
(;B[ap];W[ar])
(;B[ar];W[ap]))
(;B[cs];W[bq]))
(;B[fr];W[br])
(;B[ap];W[bq])
(;B[co];W[br])
(;B[ao];W[br])
(;B[bo];W[br]))