(;GM[1]FF[4]SZ[19]
GN[Black kills]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem25/Solution]AP[GoWiki:2009]
DT[2023-01-11]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem25/Solution

Black kills]
PL[B]

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

;B[bb]C[B1]MN[1]
;W[cc]C[W2]MN[2]
;B[ab]C[B3]MN[3]
;W[ac]C[W4]MN[4]
;B[cb]C[B5]MN[5]
;W[ca]C[W6]MN[6]
;B[ae]C[B7]MN[7]

;
)
