(;AB[cs]AB[cr]AB[cq]AW[ds]AW[dr]AW[dq]AW[cp]AW[co]AB[bp]AB[bo]AB[bn]AW[cn]AW[cm]AW[as]LB[eo:Y]LB[fo:N]C[Black played tenuki here. Was this a wise thing to do? (Y=Yes) (N=No)]AB[bm]AW[cl]AP[goproblems]
(;B[eo];W[bq]C[OK. Now show why.]
(;B[aq];W[br]C[B dies.])
(;B[br];W[aq]
(;B[ar];W[bs]C[Oops! Black dies.])
(;B[ap];W[ar];B[bs]C[Well Done! B lives.RIGHT]))
(;B[ar];W[br];B[bs];W[as]C[B dies in snapback!])
(;B[bs];W[br]C[Nope!])
(;B[ap];W[br]C[B dies.]))
(;B[fo];W[ep]C[That's not true. There's a way to counter the white cut.]))