(;GM[1]FF[4]SZ[9]
GN[Double attacks]
PC[http://senseis.xmp.net/?TheArtOf9x9Go/chie717]AP[GoWiki:2009]
DT[2016-10-14]
C[Diagram from http://senseis.xmp.net/?TheArtOf9x9Go/chie717

Double attacks]
PL[B]

AB[bc][dc][ec][cd][be][ce][ee][fe][cg]
AW[bd][dd][de][ge][bf][cf][df][ff][eg]
CR[df][cg]
SQ[ff]

;B[ef]C[B19]MN[19]

;CR[df][cg]
SQ[ff]
)
