(;GM[1]FF[4]SZ[19]
GN[Black to move]
PC[http://senseis.xmp.net/?RTGProblem50/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem50/Attempts

Black to move]
PL[B]

AB[ea][eb][ec][dd][ae][be][ce][de]
AW[cb][db][ac][bd][cd]


;
)
