(;GM[1]FF[3]
AW[hk][im][cn][bo][io][bp][cp][dq][iq][dr][fr][es]
AB[ck][ek][fn][co][do][dp][fp][cq][eq][er]PL[1]TR[cq]
C[Black to save the marked stone.
]
(;B[cr];W[ds]
(;B[cs];W[fs]
(;B[gr];W[fq]
(;B[gq];W[ep]
(;B[eq];W[eo];B[dn];W[fo]
(;B[gp];W[en];B[dm];W[er]LB[gs:A]C[Please play at A.
];B[gs];W[eq]
(;B[go];W[em]
(;B[fl];W[dl];B[cm];W[cl];B[bm];W[el]
(;B[bl];W[fm]
(;B[gm];W[gn]
(;B[dk]C[
];W[fn];B[hn]C[RIGHT
])
(;B[hn];W[gl])
)
(;B[gn];W[gm])
)
(;B[fm];W[bl];B[bn];W[br])
(;B[dk];W[bl];B[bn];W[br])
)
(;B[fm];W[el]
(;B[fl];W[dl];B[cm];W[cl]
(;B[bm];W[bl];B[bn];W[br])
(;B[bn];W[bm])
)
(;B[fk];W[dl];B[cm];W[cl]
(;B[bm];W[bl];B[bn];W[br])
(;B[bn];W[bm])
)
)
(;B[el];W[fm])
)
(;B[gn];W[em]
(;B[fl];W[br])
(;B[go];W[fm];B[bq];W[cm];B[dl];W[ar])
(;B[el];W[fm])
)
(;B[em];W[go])
(;B[bq];W[cm])
)
(;B[go];W[gp]
(;B[hp];W[fp]
(;B[en];W[ho])
(;B[hq];W[en];B[dm];W[gn])
)
(;B[en];W[fp];B[hp];W[ho])
)
)
(;B[gs];W[fo])
(;B[eo];W[br])
(;B[gp];W[br])
)
(;B[ep];W[gq])
(;B[gp];W[ep]C[White has one more liberty than black.
])
)
(;B[fq];W[gr])
(;B[gq];W[br])
)
(;B[gr];W[fq]
(;B[ep];W[gq]C[White escapes.
])
(;B[gq];W[ep]
(;B[eo];W[br])
(;B[eq];W[eo];B[dn];W[fo]
(;B[gp];W[go]C[White escapes.
])
(;B[go];W[gp];B[en];W[fp];B[hp];W[ho])
)
)
(;B[cs];W[ep];B[gq];W[fo])
(;B[bq];W[gq]C[Black dies in the corner.
])
)
(;B[gs];W[fq]
(;B[fs];W[ep]C[Black achieves nothing.
])
(;B[gq];W[ep];B[gr];W[fo])
(;B[cs];W[ep]
(;B[eq];W[br])
(;B[gq];W[gr])
(;B[fs];W[hq])
)
(;B[ep];W[gr]
(;B[hr];W[gq];B[hq];W[gp];B[hp];W[go];B[ho];W[gn]C[White escapes.
])
(;B[cs];W[fs];B[hr];W[gq];B[hq];W[gp];B[hp];W[go]C[White escapes.
])
)
)
)
(;B[bq];W[hr])
(;B[br];W[hr])
)