(;GM[1]FF[4]SZ[19]
GN[refutation ?]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem68/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem68/Attempts

refutation ?]
PL[B]

AB[cb][ib][cc][hc][dd][hd][de][ge][he]
AW[jb][dc][gc][jc][ed][gd][je][ff][hf][if][eg]

;B[fa]C[B1]MN[1]
;W[eb]C[W2]MN[2]
;B[ea]C[B3]MN[3]
;W[da]C[W4]MN[4]
;B[db]C[B5]MN[5]

;
)
