(;GM[1]FF[4]SZ[19]
GN[variation 'a']
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem16/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem16/Attempts

variation 'a']
PL[W]

AB[fa][eb][gb][cc][dc][fc]
AW[ga][hb][bc][gc][ic][cd][gd][be][ee]

;W[ed]C[W1]MN[1]
;B[bb]C[B2]MN[2]
;W[ab]C[W3]MN[3]
;B[da]C[B4]MN[4]

;
)
