(;GM[1]FF[4]SZ[19]
GN[Killing groups problem 245, Failure]
PC[http://senseis.xmp.net/?WeiqiEducationPracticeWorkbook]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?WeiqiEducationPracticeWorkbook

Killing groups problem 245, Failure]
PL[B]

AB[ha][hb][ac][bc][hc][cd][ed][gd][be][ee][ge]
AW[ab][bb][cc][dc][ec][fc]

;B[ba]C[B1]MN[1]
;W[ca]C[W2]MN[2]
;B[da]C[B3]MN[3]
;W[db]C[W4]MN[4]

;
)
