(;GM[1]FF[4]SZ[19]
GN[Two outside liberties]
PC[http://senseis.xmp.net/?posting=4208]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?posting=4208

Two outside liberties]
PL[W]

AB[db][dc][bd][cd][dd]
AW[eb][fb][ed][fd][be][de][bf][ef]

;W[da]C[W1]MN[1]
;B[ba]C[B2]MN[2]

;
)
