Only with the right order of moves, Black can live AND win the game...!
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[7]KM[0.50]TM[]
AW[da][ab][bb][cb][db][cc][cd][fd][ce][ge][cf][ef][ff][cg][eg]AB[ea][eb][ac][bc][dc][ec][fc][bd][dd][be][de][ee][fe][bf][bg]C[No komi, no prisoners - Black to play and win!]
(;B[gb]CR[gb]
(;W[gd]CR[gd]
(;B[df]CR[df]
(;W[dg]CR[dg]
;B[fa]CR[fa]C[Black wins by one point! RIGHT])
(;W[fa]CR[fa]
;B[dg]CR[dg]
;W[ba]CR[ba]
;B[ed]CR[ed]
;W[fb]CR[fb]
;B[ga]CR[ga]
;W[fb]CR[fb]
;B[fa]CR[fa]
;W[gf]CR[gf]
;B[gg]CR[gg]
;W[fg]CR[fg]C[Black wins by four points!]))
(;B[fa]CR[fa]
;W[df]CR[df]C[This is only a jigo - Black missed d2!]))
(;W[df]CR[df]
;B[gd]CR[gd]
;W[gc]CR[gc]
;B[ed]CR[ed]C[Black wins big!])
(;W[fa]CR[fa]
;B[gd]CR[gd]
;W[gc]CR[gc]
;B[ed]CR[ed]C[Black wins big!]))
(;B[gd]CR[gd]
;W[gc]CR[gc]
;B[gb]CR[gb]
;W[gd]CR[gd]
(;B[df]CR[df]
;W[dg]CR[dg]
(;B[fa]CR[fa]C[This is only a jigo - sacrificing a stone was bad!])
(;B[ed]CR[ed]
;W[gf]CR[gf]
;B[fa]CR[fa]C[This is only a jigo - sacrificing a stone was wrong]))
(;B[fa]CR[fa]
;W[df]CR[df]C[WHITE wins by one point?! Sacrificibg a stone was wrong, and Black also missed the sente play d2]))
(;B[df]CR[df]
;W[dg]CR[dg]
(;B[gb]CR[gb]
;W[fa]CR[fa]
;B[gd]CR[gd]
;W[gc]CR[gc]
(;B[gf]CR[gf]
;W[gg]CR[gg]
;B[gd]CR[gd]
;W[af]CR[af]
(;B[ae]CR[ae]
;W[gc]CR[gc]C[Black has no more ko threat])
(;B[gf]CR[gf]
;W[ae]CR[ae]C[This is hopeless for Black]))
(;B[ed]CR[ed]
;W[fb]CR[fb]C[ooops....]))
(;B[gd]CR[gd]
;W[gc]CR[gc]
(;B[gb]CR[gb]
(;W[gd]CR[gd]
(;B[fa]CR[fa]C[This is only a jigo, but Black had no choice - after playing d2, he must sacrifice a stone at g4])
(;B[ed]CR[ed]
;W[gf]CR[gf]
;B[fa]CR[fa]C[This is only a jigo]))
(;W[fa]CR[fa]
;B[gd]CR[gd]
;W[af]CR[af]
;B[ae]CR[ae]
;W[gc]CR[gc]
;B[gf]CR[gf]C[This would be ok for Black, but White F9 was a mistake - g4 is better]))
(;B[ed]CR[ed]
;W[gd]CR[gd]C[good enough for white - he can also fight the ko]
;B[gb]CR[gb]
;W[gf]CR[gf]
;B[fa]CR[fa]C[Jigo!]))
(;B[gf]CR[gf]
;W[gd]CR[gd]
(;B[ba]CR[ba]
;W[gg]CR[gg]C[White lives, Black is dead])
(;B[gg]CR[gg]
;W[ba]CR[ba]C[White lives, black is dead])))
(;B[gc]CR[gc]
;W[gd]CR[gd]C[Black is dead])
(;B[gf]CR[gf]
;W[gd]CR[gd]
;B[df]CR[df]
;W[dg]CR[dg]
;B[gg]CR[gg]
;W[ba]CR[ba]C[Black is dead])
(;B[ba]CR[ba]C[There is always a second white eye at the bottom]))