(;GM[1]FF[4]SZ[19]
GN[White lives]
PC[http://senseis.xmp.net/?RetrogradeAnalysisProblem7/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RetrogradeAnalysisProblem7/Attempts

White lives]
PL[W]

AB[aa][ca][eb][fb][bc][cc][dc]
AW[da][ab][bb][cb]
LB[ba:a]

;W[db]C[W1]MN[1]

;LB[ba:a]
)
