(;GM[1]FF[4]SZ[7]
GN[Filling in (3)]
PC[http://senseis.xmp.net/?ZaruGoProblem1/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ZaruGoProblem1/Solution

Filling in (3)]
PL[B]

AB[fa][eb][fb][gb][dc][fc][gc][dd][ed][fd][gd][ee][fe][ge][cf][df][ef][ff][gf][dg][fg][gg]
AW[ba][da][ea][ab][bb][cb][db][ac][bc][cc][ad][bd][cd][ae][be][ce][de][af][bf][bg][cg]

;B[ec]C[B1]MN[1]
;W[aa]C[W2]MN[2]

;
)
