(;GM[1]FF[4]SZ[19]
GN[Ko for life]
PC[http://senseis.xmp.net/?BeginnerExercise271/Solution]AP[GoWiki:2009]
DT[2009-07-01]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise271/Solution

Ko for life]
PL[B]

AB[fa][fb][ac][ec][fc][ad][bd][cd][dd]
AW[ca][da][ab][eb][bc][cc][dc]
CR[ab]

;B[bb]C[B1]MN[1]
;W[ba]C[W2]MN[2]
;B[aa]C[B3]MN[3]

;CR[ab]
)
