(;AW[dl]AW[el]AW[gl]AW[dm]AW[fm]AW[gm]AW[dn]AW[gn]AW[co]AW[go]AW[ho]AW[io]AW[cp]AW[hp]AW[cq]AW[dq]AW[hq]AW[iq]AW[er]AW[ir]AW[is]AB[fk]AB[gk]AB[fl]AB[hl]AB[jl]AB[em]AB[im]AB[en]AB[in]AB[kn]AB[do]AB[fo]AB[jo]AB[dp]AB[fp]AB[ip]AB[jp]AB[eq]AB[gq]AB[jq]AB[gr]AB[hr]AB[jr]AB[js]C[White to play. Can white save his stones in sente?]PL[W]
(;W[eo];B[fr]C[]
(;W[fn];B[dr]C[ White is safe and black lives with a part of his group.RIGHT])
(;W[gs];B[ep]
(;W[fn];B[dr]C[]
(;W[hs];B[fs];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[eo]C[White connects out but in gote while black lives with the main part of his group.]))
(;W[gp];B[dr]
(;W[fn];B[es];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[hs];B[fs];W[fn]C[White connects out but in gote while black lives with the main part of his group.]))
(;W[fs];B[dr]
(;W[gp];B[es]
(;W[hs];B[fn])
(;W[fn];B[eo]))
(;W[es];B[hs])
(;W[fn];B[es]C[White connects out but in gote while black lives with the main part of his group.])))
(;W[ep];B[dr]LB[fq:A]C[ White can choose between playing the ko at A or connecting out while black can live.RIGHT]))
(;W[fn];B[eo]
(;W[fr];B[hn]
(;W[gp];B[fq]C[Black wins.])
(;W[fq];B[gp]C[Black wins.]))
(;W[gs];B[fr]
(;W[gp];B[fs]
(;W[hs];B[hn])
(;W[dr];B[hs]))
(;W[fs];B[dr]
(;W[es];B[hs])
(;W[hs];B[es])
(;W[ds];B[hs]))
(;W[hs];B[fs])
(;W[es];B[fs]))
(;W[gp];B[hn]C[Black wins.])
(;W[fq];B[fr]C[Black wins.]))
(;W[fr];B[eo]
(;W[fq];B[gp];W[gs];B[hs]
(;W[fn];B[fs]
(;W[es];B[hn]C[Only ko.])
(;W[ep]C[Only ko.]))
(;W[ep];B[fs];W[fn];B[eq]C[Only ko.])
(;W[fs];B[dr];W[ep]C[Only ko.]))
(;W[gs];B[hs]C[This leads to ko.]))
(;W[gs];B[fr]
(;W[eo];B[ep]LB[eo:A]LB[fr:B]LB[gs:C]C[See the path white A, black B, white C.]
(;W[fn];B[dr]C[]
(;W[hs];B[fs];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[eo]C[White connects out but in gote while black lives with the main part of his group.]))
(;W[gp];B[dr]
(;W[fn];B[es];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[hs];B[fs];W[fn]C[White connects out but in gote while black lives with the main part of his group.]))
(;W[fs];B[dr]
(;W[gp];B[es]
(;W[hs];B[fn])
(;W[fn];B[eo]))
(;W[es];B[hs])
(;W[fn];B[es]C[White connects out but in gote while black lives with the main part of his group.])))
(;W[fn];B[dr];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[fs];B[dr]
(;W[eo];B[ep]
(;W[fn];B[eo];W[gp];B[es])
(;W[gp];B[es]
(;W[hs];B[fn])
(;W[fn];B[eo]))
(;W[hs];B[es]))
(;W[es];B[hs]C[White loses.]))
(;W[hs];B[fs]
(;W[eo];B[ep];W[fn];B[dr];W[eo]C[White connects out but in gote while black lives with the main part of his group.])
(;W[dr];B[eo]C[White loses.]))))