(;GM[1]FF[4]SZ[19]
GN[solution]
PC[http://senseis.xmp.net/?BeginnerExercise284/Attempts]AP[GoWiki:2009]
DT[2009-05-12]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise284/Attempts

solution]
PL[B]

AB[ga][fb][hb][ac][cc][fc][ad][dd][ed][fd][ae][be][ce]
AW[aa][ca][da][fa][bb][eb][bc][dc][ec][bd][cd]

;B[cb]C[B1]MN[1]
;W[db]C[W2]MN[2]
;B[ab]C[B3]MN[3]

;
)
