(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?BeginnerExercise13/Solution]AP[GoWiki:2009]
DT[2016-04-02]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise13/Solution

]
PL[W]

AB[ab][bb][cb][db][eb]
AW[bc][cc][dc][ec][fc][gc][ic][be]
LB[fa:b][gb:a]

;W[ba]C[W1]MN[1]
;B[ca]C[B2]MN[2]
;W[ea]C[W3]MN[3]
;B[fb]C[B4]MN[4]

;LB[fa:b][gb:a]
)
