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

a et b are miai]
PL[W]

AB[ba][ca][fa][bb][cb][db][gb][fc][hc][fd][be][bf][ff][cg][dg]
AW[da][ab][eb][fb][bc][dc][ec][bd][dd][cf][df]
LB[cc:a][de:b]

;W[ea]C[W1]MN[1]
;B[ad]C[B2]MN[2]
;W[ce]C[W3]MN[3]
;B[ee]C[B4]MN[4]

;LB[cc:a][de:b]
)
