(;GM[1]FF[4]SZ[19]
GN[White fails, giving black ko.]
PC[http://senseis.xmp.net/?BeginnerExercise225/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise225/Attempts

White fails, giving black ko.]
PL[W]

AB[ac][bc][cc][dc][cd][ae][be][af]
AW[eb][ec][dd][ed][ce][bf][cf][ag][bh]
CR[eb]

;W[ba]C[W1]MN[1]
;B[ca]C[B2]MN[2]
;W[cb]C[W3]MN[3]
;B[da]C[B4]MN[4]
;W[db]C[W5]MN[5]
;B[bb]C[B6]MN[6]
;W[bd]C[W7]MN[7]
;B[ad]C[B8]MN[8]
;W[ea]C[W9]MN[9]
;B[aa]C[B10]MN[10]

;CR[eb]
)
