(;AW[ap]AW[bp]AW[cp]AW[aq]AW[cq]AW[dq]AW[dr]AW[es]AW[fs]AW[gs]AB[an]AB[bn]AB[cn]AB[co]AB[do]AB[eo]AB[ep]AB[eq]AB[fq]AB[gq]AB[hq]AB[ar]AB[br]AB[cr]AB[er]AB[hr]AB[ir]AB[as]AB[cs]AB[ds]AB[is]C[Tip: Do the opposite]
(;B[ao];W[bq];B[bo];W[bs])
(;B[hs];W[bq];B[gr];W[bs])
(;B[dp];W[bq];B[bo];W[bs])
(;B[fr];W[bq];B[gr];W[bs])
(;B[bq];W[bs];B[br];W[ar];B[cs];W[cr]C[only ko])
(;B[bs];W[bq]
(;B[bs];W[br];B[cs];W[as];B[ar];W[ds];B[as];W[cr];B[bs];W[as];B[ar];W[cs]C[white alive])
(;B[br];W[bs];B[ar];W[cr];B[ds]C[dead!RIGHT])
(;B[ds];W[bs];B[ar]
(;W[br]C[CHOICE];B[cs]C[dead!RIGHT])
(;W[cs];B[br]C[dead!RIGHT]))
(;B[cs];W[bs];B[br];W[ar];B[as]C[ko])))