(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem40/Attempts]AP[GoWiki:2009]
DT[2016-08-12]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem40/Attempts

]
PL[B]

AB[ba][fa][bb][gb][fc][hc][fd][be][bf][ff][cg][dg]
AW[ab][eb][fb][bc][dc][bd][dd][cf][df]

;B[db]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[cb]C[B3]MN[3]
;W[ec]C[W4]MN[4]
;B[ca]C[B5]MN[5]

;
)
