(;GM[1]FF[4]SZ[9]
GN[Four external liberties]
PC[http://senseis.xmp.net/?BridgeGo]AP[GoWiki:2009]
DT[2014-04-05]
C[Diagram from http://senseis.xmp.net/?BridgeGo

Four external liberties]
PL[B]

AB[dd]
SQ[ab][bb][cb][db][eb][fb][gb][hb][ib][dc]


;SQ[ab][bb][cb][db][eb][fb][gb][hb][ib][dc]
)
