(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem25/Attempts]AP[GoWiki:2009]
DT[2009-07-10]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem25/Attempts

]
PL[B]

AB[fb][dc][fc][ed][fd][be][ce][de][cg]
AW[db][eb][ec][bd][cd][dd]

;B[bb]C[B1]MN[1]
;W[cc]C[W2]MN[2]
;B[cb]C[B3]MN[3]
;W[ab]C[W4]MN[4]

;
)
