This was a game I played on KGS as black. And a second before I hit the resign button, the winning sequence came to my mind.
This is my first problem I post here. If you find any forgotten variations, please let me know.
Thanks to Spica and Hans for the corrections. Hope everything is fine now and I didn't miscount.
(;GM[1]FF[4]AP[glGo:1.0]ST[1]
SZ[9]KM[0.0]
PW[Weiss]PB[Schwarz]DT[2005-07-20]
AB[bi][hh][gh][bh][ah][gg][fg][eg][cg][bg][cf][de][ce][be][ae][gd][cd][ad][hc][gc][fc][ec][bc][hb][fb][db][bb][ab][ga][ea][da]AW[di][ih][fh][eh][ch][hg][dg][if][hf][gf][ff][df][he][ge][ee][id][hd][fd][ed][dd][ic][dc][cc][ib][cb][ia][ha][ca][ba]C[Black to win the game, no komi]
(;B[ef]
;W[dh]
(;B[hi]
;W[fi]
(;B[ci]
;W[ig]
;B[aa]
;W[fe]C[CHOICE
RIGHT
Seki. Black wins by 9 points.])
(;B[aa]
;W[fe]
;B[ci]C[CHOICE
RIGHT
Seki. Black wins by 9 points.]))
(;B[gi]
;W[fi])
(;B[aa]
;W[fe]
;B[hi]
;W[fi]
;B[ci]C[CHOICE
RIGHT
Seki. Black wins by 9 points.]))
(;B[aa]
;W[ef]C[After bC1-wD2 white wins by 9 points.])
(;B[ci]
;W[dh]
(;B[aa]
;W[ef]C[White wins by 9 points.])
(;B[ef]
;W[gi]
;B[aa]
;W[hi]C[White wins by 9 points.])))