(;GM[1]FF[4]SZ[5]
GN[Black plays to -1]
PC[http://senseis.xmp.net/?NumbersInGone]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?NumbersInGone

Black plays to -1]
PL[B]

AB[aa][ba][ca][da][ea][ab][bc][ad][bd][cd][dd]
AW[bb][cb][db][eb][cc][dc][ed][ae][be][de][ee]
LB[ec:a]

;B[ac]C[B1]MN[1]

;LB[ec:a]
)
