(;GM[1]FF[4]SZ[19]
GN[Black to play.]
PC[http://senseis.xmp.net/?BeginnerExercise228/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise228/Solution

Black to play.]
PL[B]

AB[ca][ga][ab][cb][db][gb][bc][cc][fc][gc][bd][fd][hd][ee][fe][ge]
AW[ba][fa][eb][hb][dc][ec][ic][ad][cd][ed][id][be][ce][de][ie][ef][ff][gf][hf][dg]

;B[ea]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[fb]C[B3]MN[3]

;
)
