(;GM[1]FF[4]SZ[19]
GN[Inferior]
PC[http://senseis.xmp.net/?KyuExercise57/Solution]AP[GoWiki:2009]
DT[2009-06-03]
C[Diagram from http://senseis.xmp.net/?KyuExercise57/Solution

Inferior]
PL[W]

AB[da][db][eb][ec][bd][ed][ae][ee][bf][cf][df][ef]
AW[ca][cb][bc][cc][dc][dd][be][ce][de]
LB[cd:a]

;W[ab]C[W1]MN[1]
;B[ba]C[B2]MN[2]
;W[ad]C[W3]MN[3]
;B[ac]C[B4]MN[4]

;LB[cd:a]
)
