(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise63/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise63/Solution

Solution]
PL[B]

AB[ba][ea][ab][bb][fb][cc][dc][ec]
AW[da][cb][gb][bc][fc][hc][bd][cd][dd][ed][fd]

;B[ca]C[B1]MN[1]
;W[ac]C[W2]MN[2]
;B[db]C[B3]MN[3]

;
)
