(;GM[1]FF[4]SZ[19]
GN[variation (better for white)]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem20/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem20/Attempts

variation (better for white)]
PL[B]

AB[cc][gc][bd][dd][gd][id][de][fe][cg]
AW[dc][ec][jc][fd][jd][ee][ge][je][ef][hf]
LB[cb:a]

;B[db]C[B1]MN[1]
;W[eb]C[W2]MN[2]
;B[ed]C[B3]MN[3]
;W[fc]C[W4]MN[4]
;B[ea]C[B5]MN[5]
;W[fb]C[W6]MN[6]
;B[gb]C[B7]MN[7]
;W[ff]C[W8]MN[8]
;B[fa]C[B9]MN[9]

;LB[cb:a]
)
