(;AW[cq]AW[cr]AW[cs]AW[bq]AW[cp]AW[ds]AW[bo]AB[br]AB[co]AB[do]AB[dp]AB[dq]AB[dr]AB[er]AB[es]AB[bn]AW[an]AB[bm]AB[ap]C[white to save his marked stones!]TR[bq]TR[cp]TR[cq]TR[cr]TR[cs]TR[ds]AP[goproblems]
(;W[aq];B[ao];W[bp];B[ao]C[only one eye])
(;W[ao];B[aq]
(;W[bp];B[as]
(;W[bs];B[am]C[!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!])
(;W[ar];B[aq]))
(;W[bs]C[];B[am]
(;W[bp];B[as])
(;W[ar];B[bp]C[RIGHT]))
(;W[ar];B[as]C[you can't approach at b1]))
(;W[ar];B[bs];W[ao];B[am])
(;W[bs];B[ao];W[ar]C[RIGHT]))