(;AB[ar]AB[bs]AW[br]AW[bq]AW[bp]AW[ap]AW[cs]AW[dr]AB[bo]AB[co]AB[cp]AB[dq]AW[er]AB[fr]AB[eq]AB[es]AB[fs]AB[gq]C[White to live.]AB[bm]AP[goproblems]
(;W[aq];B[cr]
(;W[cq];B[ds]C[CHOICE]
(;W[as];B[cr]
(;W[dr]C[Very good.RIGHT])
(;W[bs];B[dr]))
(;W[cr];B[ao]))
(;W[as];B[ds]))
(;W[ds];B[cr])
(;W[cq]
(;B[as];W[aq];B[as];W[ds])
(;B[ds]C[CHOICE]
(;W[cr];B[as];W[aq];B[as])
(;W[as];B[bs]C[Only ko. There is better.])))
(;W[as]
(;B[cq];W[cr];B[bs];W[aq]C[RIGHT])
(;B[cr]C[CHOICE]
(;W[cq];B[bs]C[CHOICE]
(;W[aq];B[ds]
(;W[as];B[cr];W[dr]C[Very good.RIGHT])
(;W[cr];B[ao]C[Upsie...]))
(;W[as]C[Hey! It's illegal. You can not recapture ko immediately.])
(;W[ds];B[cr])
(;W[cr];B[as];W[aq];B[as]C[Only one eye left. :-(])
(;W[ao];B[ds]C[Its a ko. You can do better!]))
(;W[ds];B[bs])
(;W[bs];B[ds])))
(;W[cr];B[as];W[aq];B[as]C[One eye only. White is dead. :-(]))