(;GM[1]FF[4]SZ[19]
GN[Ko]
PC[http://senseis.xmp.net/?LifeAndDeathTheBook/Chapter18Problem4]AP[GoWiki:2009]
DT[2009-07-16]
C[Diagram from http://senseis.xmp.net/?LifeAndDeathTheBook/Chapter18Problem4

Ko]
PL[B]

AB[fb][ec][fc][bd][fd][be][ce][de][ee]
AW[db][eb][bc][dc][cd][dd][ed]

;B[bb]C[B1]MN[1]
;W[ab]C[W2]MN[2]
;B[cb]C[B3]MN[3]
;W[ba]C[W4]MN[4]
;B[ca]C[B5]MN[5]

;
)
