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

Solution]
PL[B]

AB[eb][fb][fc][dd][ed][ee][cf][df][ef][dg]
AW[cb][db][cc][ec][cd][ce][de][bf][bg][cg]

;B[dc]C[B1]MN[1]
;W[ea]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[da]C[W4]MN[4]

;
)
