(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise247/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise247/Solution

Solution]
PL[W]

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

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

;
)
