(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
AW[eq][fq][ar][br][cr]AB[eo][cp][dp][gp][aq][bq][cq][gq][iq]C[This is the problem position. Status?]
(;B[]
;W[fr]C[A white move here is probably enough to live.]
(;B[dr]
;W[dq]
(;B[gr]
;W[ds]
;B[fs]
;W[es])
(;B[cs]
;W[er]
;B[es]
;W[fs]))
(;B[gr]
;W[dr]
;B[fs]
;W[es]
;B[gs])
(;B[bs]
;W[dr]
;B[cs]
;W[es]))
(;B[bs]C[But can black kill with a move like this?

This is the correct move.]
(;W[dq]C[This increases the eye space]
(;B[cs]C[Black next playing inside is the correct move,]
;W[ds]C[White will get one eye when he captures 2.]
;B[es]
;W[as]
;B[gs]C[But this move links up the black stones,
leaving white with just the one eye.]
(;W[fr]
;B[fs])
(;W[er]
;B[fs]
;W[gr]
;B[hr]
;W[fr]
;B[hs]))
(;B[ds]C[If black here]
(;W[gr]C[White doesn't have time to escape along the side]
;B[dr]C[as black cuts]
;W[er]
;B[cs])
(;W[dr]C[White must connect]
(;B[fr]
(;W[es]
;B[gr]C[This way dies too])
(;W[gr]C[This is a white tesuji to gain liberties.]
;B[hr]
;W[es]
(;B[cs]
;W[gs]
;B[hs]
;W[as]
;B[cs]
;W[fs])
(;B[fs]
;W[er]
(;B[cs]
;W[gs])
(;B[gs]
;W[cs]))))
(;B[gr]
;W[fr]
(;B[fs]
;W[es]
;B[er]
;W[cs]
;B[gs]
;W[es])
(;B[cs]
;W[es])
(;B[es]
;W[fs]
;B[cs]C[White is alive])))))
(;W[gr]C[I white tries to run away along the edge.]
;B[dr]
;W[er]
;B[dq]
;W[ir]C[It looks like white may be able to save something,
though he would go no where if there was a black
on the 10-4 point, for instance.

White cannot rescue the 3 corner stones.])
(;W[fr]
;B[dr])
(;W[er]
;B[gr]
;W[dq]
;B[ds]
;W[cs]
;B[es]
;W[fs]
;B[fr]
;W[dr]
;B[es])))
